In a mixing bowl, thoroughly blend Dijon mustard, honey, whole grain mustard (if using), minced garlic, apple cider vinegar or lemon juice, paprika, and a pinch of salt and pepper until the mixture is uniform and smooth. Set the glaze aside.
Blot the pork chops dry using paper towels to ensure even searing. Season both sides of each chop with salt and freshly ground black pepper.
In a large heavy-bottomed skillet, heat the olive oil or butter over medium-high flame. Add the seasoned pork chops and sear for about 3 to 4 minutes on each side, or until they develop a golden crust.
Lower the heat to medium-low. Carefully pour the prepared honey mustard glaze over the pork chops. Allow the mixture to simmer gently for 5 to 7 minutes, turning the chops halfway through. Continue cooking until the internal temperature reaches 145°F (63°C) and the sauce slightly thickens.
Transfer the pork chops to a plate and let them rest for 3 minutes. Spoon the warm glaze over the top and garnish with a sprinkle of freshly chopped parsley. Serve immediately.