Prepare the marinade: In a small bowl, combine olive oil, minced garlic, rosemary, thyme, lemon zest, Dijon mustard, salt, and pepper. Mix well until all ingredients are thoroughly combined.
Marinate the lamb chops: Place the lamb chops in a shallow dish or resealable bag. Pour the marinade over the chops, ensuring they are evenly coated. Cover or seal and refrigerate for at least 30 minutes, or up to 2 hours, to allow the flavors to infuse.
Preheat the grill or skillet: Heat a grill or skillet over medium-high heat. If using a skillet, add a little oil to prevent sticking.
Cook the lamb chops: Remove the lamb chops from the marinade and place them on the grill or in the skillet. Cook for about 4-5 minutes per side for medium-rare, or longer if you prefer your lamb more well-done.
Rest the lamb chops: Once cooked to your desired doneness, transfer the lamb chops to a plate and cover loosely with foil. Let them rest for about 5 minutes before serving.
Garnish and serve: Sprinkle freshly chopped parsley over the lamb chops for added color and flavor. Serve with your favorite side dishes and enjoy!