01 - Set oven temperature to 400°F (200°C) and allow it to fully preheat.
02 - Pat the rack of lamb dry using paper towels and trim away any excess fat.
03 - In a mixing bowl, combine rosemary, thyme, garlic, sea salt, black pepper, Dijon mustard, and olive oil to create a uniform paste.
04 - Generously rub the herb paste all over the lamb, focusing on the meaty side.
05 - Place the rack of lamb fat side up in a roasting pan or an ovenproof skillet.
06 - Roast in the preheated oven for 20 to 25 minutes for medium-rare doneness, or longer to achieve desired internal temperature between 130°F and 135°F (54°C to 57°C).
07 - Remove from oven, transfer to a cutting board, tent loosely with foil, and allow to rest for 10 minutes to redistribute juices.
08 - Cut between the bones into individual chops, garnish with parsley if desired, and serve with lemon wedges.