01 - Preheat oven to 400°F for optimal roasting temperature.
02 - Pat the lamb rack thoroughly dry with paper towels. Rub all over with 1 tablespoon olive oil, then season generously with salt and freshly ground black pepper on all sides.
03 - Heat a large ovenproof skillet over medium-high heat. Sear the lamb rack fat side down for 2-3 minutes until deeply browned and crisp. Turn and sear remaining sides for 1-2 minutes each to develop color. Remove from heat.
04 - In a mixing bowl, combine breadcrumbs, parsley, rosemary, thyme, garlic, Parmesan cheese, lemon zest, and 2 tablespoons olive oil. Mix thoroughly until all crumbs are evenly moistened and the mixture holds together when pressed.
05 - Brush the seared lamb rack evenly with Dijon mustard, ensuring complete coverage on the fat side where the crust will adhere.
06 - Press the herb crumb mixture firmly and evenly onto the mustard-coated fat side of the rack, creating a compact, even layer that will crust during roasting.
07 - Return lamb to skillet or transfer to a baking tray. Roast in preheated oven for 15-20 minutes until internal temperature reaches 135°F for medium-rare doneness.
08 - Remove from oven and tent loosely with aluminum foil. Allow the lamb to rest for 10 minutes, permitting juices to redistribute throughout the meat for optimal tenderness.
09 - Slice between the bones into individual chops. Arrange on serving plates and serve immediately while the crust remains crisp.