Place the freshly squeezed lemon juice, extra-virgin olive oil, honey, and a generous pinch each of salt and black pepper in a tightly sealed jar or small mixing bowl.
Shake the covered jar vigorously, or whisk the mixture thoroughly if using a bowl, until the dressing becomes smooth and emulsified.
Taste and adjust the salt and pepper as desired. If the lemons are especially tart, slightly more honey may be used to balance their acidity.
Add the dry quinoa and stir briefly. Reduce the heat to low, cover the saucepan, and simmer for 12–15 minutes, or until the grains are tender and the broth has been completely absorbed.
Fluff the cooked quinoa gently with a fork, then transfer it to a large bowl or suitable storage container and allow it to reach room temperature.
Cover the cooled quinoa and refrigerate until thoroughly chilled. Cooling it completely helps the grains retain their texture and reduces the chance of the finished salad becoming soggy.
While the quinoa cools, dice the English cucumber and finely mince the red onion and parsley. Finely chop the mint leaves.
Roughly chop the roasted salted pistachios and crumble the feta cheese if it has not already been prepared.
Rinse the garbanzo beans thoroughly and allow them to drain well before assembling the salad.
Transfer the cold quinoa to a large mixing bowl. Add the drained garbanzo beans, diced cucumber, minced red onion, parsley, mint, chopped pistachios, and crumbled feta.
Pour over the preferred amount of lemon-honey dressing and gently toss until the quinoa and salad ingredients are evenly coated.
Taste the finished salad and season with additional salt and black pepper as necessary.