01 - Preheat oven to 400°F. Line a baking sheet with parchment paper or foil.
02 - Pat the lamb rack dry with paper towels. Season all over with salt and pepper.
03 - Heat 1 tablespoon olive oil in a large skillet over medium-high heat. Sear the lamb fat side down first, until browned on all sides, approximately 2-3 minutes per side. Transfer to the prepared baking sheet, meat side up.
04 - In a small bowl, mix together Dijon mustard, remaining olive oil, minced garlic, rosemary, thyme, parsley, breadcrumbs, and lemon zest until a thick paste forms.
05 - Brush the top and sides of the lamb with the herb mixture, pressing gently to ensure it adheres properly.
06 - Roast in the preheated oven for 18-22 minutes for medium-rare doneness, targeting an internal temperature of 130°F. Extend cooking time if a higher degree of doneness is desired.
07 - Remove from oven and tent loosely with foil. Allow to rest for 10 minutes. Carve between the bones into individual chops and dot with butter if desired before serving.