01 - Preheat your oven to 400°F (200°C).
02 - Pat the lamb rack dry and season all over with salt and black pepper.
03 - Heat 2 tablespoons olive oil in a large ovenproof skillet over medium-high heat. Sear the lamb rack, fat side down, for 2–3 minutes until browned. Flip and sear the other side for 2 minutes. Remove from heat and set aside.
04 - In a small bowl, mix together rosemary, parsley, thyme, garlic, Dijon mustard, olive oil, breadcrumbs, salt, and pepper to form a paste.
05 - Brush the top and sides of the lamb rack with the herb paste, pressing gently to adhere.
06 - Place the skillet with the lamb in the oven (or transfer to a roasting pan if needed). Roast for 15–20 minutes for medium-rare (internal temp 130°F/54°C), or longer if desired.
07 - Remove from the oven, cover loosely with foil, and let rest for 10 minutes before slicing into individual chops. Serve immediately.