Chicken breast with zucchini and squash is a quick skillet dinner with juicy seasoned chicken, tender vegetables, fresh lemon, Parmesan, and Italian herbs. Everything cooks in one pan for a bright, savory meal that works especially well on busy weeknights.
When you want a dinner that feels fresh but still satisfying, this chicken and vegetable skillet is a dependable option. The zucchini and yellow squash cook quickly, while the chicken gets plenty of flavor from garlic, onion, herbs, and lemon zest.
Cooking the chicken and vegetables separately in the same skillet is what makes the dish work so well. The chicken has room to brown instead of steaming, and the squash stays tender without becoming overly soft. Once everything comes back together, lemon juice, Parmesan, and parsley create a simple finishing layer that ties the entire skillet together.
It is also an easy meal to build around whatever you are serving that evening. Keep it light on its own, add a simple side, or spoon the chicken and vegetables over warm orzo for a more substantial dinner.
Chicken Breast with Zucchini and Squash Ingredients
You only need a straightforward combination of chicken, summer vegetables, herbs, and a few finishing ingredients to make this skillet flavorful.
- Boneless chicken breasts: The main protein. Cutting or using evenly sized pieces helps them cook quickly and consistently in the skillet.
- Zucchini: Adds mild flavor and a tender bite while absorbing the buttery Italian seasoning.
- Yellow squash: Complements the zucchini with a similar texture and slightly different color, making the skillet more vibrant.
- Olive oil: Helps the chicken brown and gives the vegetables enough fat to sauté rather than steam.
- Unsalted butter: Adds richness to both the chicken and vegetables without overpowering the fresh lemon flavor.
- Italian seasoning: Provides the main herb flavor throughout the skillet.
- Garlic and onion powder: Season the chicken deeply and add savory flavor without requiring additional chopping.
- Fresh lemon: Both zest and juice bring brightness that balances the butter and Parmesan.
- Parmesan cheese: Adds a salty, savory finish that melts slightly over the warm chicken and vegetables.
- Fresh parsley: Gives the completed skillet freshness and a clean herbal finish.
- Salt and black pepper: Essential for bringing out the flavor of both the chicken and squash.
Cooking Steps
STEP 1: Pat the chicken dry before seasoning it. Removing excess moisture helps the surface brown more effectively once it reaches the hot pan. Season the chicken with salt, black pepper, Italian herbs, garlic powder, onion powder, and finely grated lemon zest, making sure the seasoning reaches all sides.
STEP 2: Heat olive oil in a large nonstick skillet over medium-high heat, then melt in some of the butter. Place the seasoned chicken into the hot skillet in an even layer. Give the pieces enough space so they can sear rather than release moisture and steam.
STEP 3: Cook the chicken for about 3 minutes on the first side, then turn the pieces and continue cooking until browned and cooked through. The thickest portion should reach 165°F. Transfer the chicken to a plate and loosely cover it so it stays warm while you prepare the vegetables.
STEP 4: Return the skillet to medium-high heat and add the remaining olive oil and butter. Add the sliced zucchini and yellow squash, then season them with salt, Italian seasoning, garlic powder, and black pepper to taste.
STEP 5: Sauté the vegetables for roughly 4 minutes, tossing them occasionally. You want the pieces tender enough to eat comfortably while still holding their shape. Avoid cooking them until completely soft because they will remain in the hot skillet briefly after the chicken returns.
STEP 6: Add the cooked chicken back to the pan with the zucchini and squash. Pour fresh lemon juice over everything and gently toss so the chicken and vegetables pick up the buttery pan flavors and lemon evenly.
STEP 7: Remove the skillet from the heat and finish with finely grated Parmesan and chopped parsley. Add a little extra lemon zest or Parmesan just before serving if you want the fresh citrus or savory cheese flavor to stand out more.
What to Serve with Chicken Breast with Zucchini and Squash
Because this skillet already includes both protein and vegetables, it does not need much to become a complete dinner. A simple starch is usually the most useful addition.
- Cooked orzo: The small pasta catches the lemony, buttery juices from the skillet and turns the dish into a more filling meal.
- Steamed or fluffy rice: A mild rice side works especially well when you want something simple that will not compete with the Parmesan and herbs.
- Crusty bread: Serve warm bread alongside the skillet for soaking up the lemon, butter, and savory juices left on the plate.
Can I use chicken thighs instead of breasts?
Boneless chicken thighs can work with the same general flavor combination, although their cooking time may differ depending on their thickness. Cook them until they reach a safe internal temperature and are fully cooked before removing them from the skillet.
Chicken thighs also release a little more fat than breast meat, so you may find that you need slightly less added oil when cooking them.
How do I keep zucchini and squash from getting soggy?
Start with a hot skillet and avoid overcrowding it. The vegetables should sauté rather than sit in a large amount of released moisture.
Cutting the zucchini and yellow squash into pieces of similar thickness also helps. Cook them only until just tender, since they will continue to soften slightly from the residual heat when the chicken is returned to the pan.
Helpful Tips
- Dry the chicken well. Surface moisture makes browning more difficult, so patting the chicken dry before seasoning gives you better color and texture.
- Watch the vegetable cooking time. Zucchini and yellow squash cook quickly. Keeping them slightly firm prevents a soft or watery finished skillet.
- Add lemon juice near the end. Finishing with fresh lemon rather than cooking it for a long time preserves its bright flavor and keeps the dish tasting fresh.
Can I prepare this skillet ahead of time?
You can prepare several components in advance. Cut the zucchini and squash, grate the Parmesan, chop the parsley, and measure the seasonings ahead of time.
For the nicest texture, however, cook the chicken and vegetables close to serving. Freshly sautéed squash has a firmer texture than vegetables that have been cooked, chilled, and reheated.
Can I add the Parmesan directly to the skillet?
Yes. Add the Parmesan once the chicken and vegetables are fully cooked and the skillet is coming off the heat. The warmth will soften the cheese and help it cling to the ingredients without needing to cook it for an extended period.
You can also place extra Parmesan at the table so everyone can add as much as they prefer.
How to Store & Reheat
Allow leftovers to cool before transferring them to an airtight container. Refrigerate the chicken, zucchini, and squash promptly and use within about 3 to 4 days.
For reheating, a skillet works particularly well because you can warm the chicken and vegetables gently without introducing extra moisture. Place the leftovers in a pan over medium-low heat and heat until the chicken is hot throughout. A small splash of water can be added if the pan seems dry.
You can also reheat individual portions in the microwave. Use shorter intervals and stir or rearrange the pieces between each interval so the chicken heats evenly without becoming tough.
Freezing is possible, but the texture of zucchini and yellow squash becomes noticeably softer after thawing. If texture is important, refrigeration is the better storage option. If you do freeze leftovers, place them in an airtight freezer-safe container and use them within about 2 to 3 months for the best quality.
After reheating, a small squeeze of fresh lemon juice, a sprinkle of parsley, or a little additional Parmesan can refresh the flavors and make the leftovers taste closer to the freshly cooked skillet.
Chicken Breast with Zucchini and Squash
Ingredients
For the Chicken
- 1.25 pounds boneless chicken breasts
- 1 tablespoon extra-virgin olive oil
- 2 teaspoons Italian seasoning
- 1 teaspoon finely grated lemon zest
- 1 tablespoon unsalted butter
- 1/2 teaspoon garlic powder
- Kosher salt as needed
- 1/2 teaspoon onion powder
- Freshly cracked black pepper to taste
For the Vegetables
- 10 ounces yellow squash
- 1 tablespoon unsalted butter
- 1/2 teaspoon garlic powder
- 10 ounces zucchini sliced into 1/2-inch chunks or half-moon pieces
- Kosher salt to taste
- 1 tablespoon olive oil
- Freshly ground black pepper as desired
- 1 teaspoon Italian seasoning such as McCormick Gourmet
For Finishing
- 1/3 cup finely grated Parmesan cheese
- Additional freshly grated lemon zest as desired
- 2 tablespoons freshly squeezed lemon juice
- 2 tablespoons fresh parsley finely chopped for garnishing
Instructions
- Warm 1 tablespoon of olive oil in a 12-inch nonstick skillet set over medium-high heat.
- Pat the chicken thoroughly with paper towels to remove surface moisture.
- Season the chicken with kosher salt, freshly ground black pepper, 2 teaspoons Italian seasoning, 1/2 teaspoon garlic powder, 1/2 teaspoon onion powder, and 1 teaspoon lemon zest.
- Toss or turn the chicken until the seasonings are distributed evenly over the pieces. The seasoning may be applied directly on the cutting board for convenience.
- Add 1 tablespoon of unsalted butter to the heated skillet containing the olive oil and allow it to melt.
- Arrange the seasoned chicken in the skillet and cook for approximately 3 minutes on the first side.
- Turn the chicken over and continue cooking for about 3 additional minutes, or until the thickest pieces register an internal temperature of 165°F.
- Transfer the fully cooked chicken to a plate and loosely cover it with foil to retain its warmth.
- Using the same skillet, add the remaining 1 tablespoon olive oil and 1 tablespoon unsalted butter. Heat over medium-high heat.
- Place the zucchini and yellow squash in the skillet, then season them with kosher salt, 1 teaspoon Italian seasoning, and 1/2 teaspoon garlic powder.
- Cook for approximately 4 minutes, tossing occasionally, until the vegetables become just tender.
- Return the cooked chicken to the skillet with the sautéed zucchini and yellow squash.
- Pour the fresh lemon juice over the mixture and toss gently until the chicken and vegetables are evenly coated.
- Scatter the grated Parmesan and chopped parsley over the dish before serving.
- Serve warm, adding more Parmesan cheese and fresh lemon zest as desired.