01 - Preheat the oven to 425°F. Line a large sheet pan with parchment paper or foil to facilitate cleanup.
02 - In a large bowl, toss the potatoes, carrots, and red onion with 2 tablespoons olive oil, half the garlic, rosemary, thyme, lemon zest, salt, and pepper until evenly coated.
03 - Spread the seasoned vegetables evenly on the prepared sheet pan and roast for 20 minutes to begin the cooking process.
04 - While vegetables roast, pat the lamb chops dry with paper towels. Rub with remaining olive oil, garlic, rosemary, thyme, lemon juice, salt, and pepper on both sides.
05 - Remove the sheet pan from the oven. Nestle the seasoned lamb chops and trimmed asparagus among the partially roasted vegetables, arranging them in a single layer.
06 - Return to the oven and roast for an additional 18-20 minutes, flipping lamb chops halfway through cooking, until lamb reaches desired doneness and vegetables are tender.
07 - Transfer to a serving platter or plates immediately. Garnish with fresh chopped parsley and extra lemon wedges if desired. Serve hot.