01 - Set oven temperature to 400°F.
02 - Pat the rack dry with paper towels and trim any excess fat.
03 - Combine rosemary, thyme, garlic, sea salt, black pepper, Dijon mustard, and olive oil in a small bowl to create a paste.
04 - Evenly rub the herb paste over the entire lamb rack, focusing on the meaty surfaces.
05 - Place the rack fat side up in a roasting pan or ovenproof skillet.
06 - Cook in the preheated oven for 20 to 25 minutes for medium-rare doneness, aiming for an internal temperature between 130°F and 135°F. Adjust time for preferred doneness.
07 - Remove from oven and transfer to a cutting board; loosely cover with foil and rest for 10 minutes to ensure juices redistribute.
08 - Slice between ribs into individual chops, garnish with chopped parsley, and accompany with lemon wedges if desired.