Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Trim any excess fat from the lamb loin chops and pat them dry with a paper towel to ensure a good sear.
In a small bowl, combine the minced rosemary, thyme, garlic, half of the sea salt, and half of the black pepper.
Rub the herb and garlic mixture evenly onto both sides of the lamb chops, pressing it into the meat.
Toss the asparagus spears on the prepared baking sheet with 0.5 tbsp of olive oil and the remaining salt and pepper.
Roast the asparagus in the oven for 12-15 minutes until it is tender and slightly charred at the tips.
While the asparagus roasts, heat the remaining 0.5 tbsp of olive oil in a cast-iron skillet over medium-high heat.
Sear the lamb chops for 3-4 minutes per side until the herb crust is golden brown and the internal temperature reaches 135°F for medium-rare.
Remove the lamb from the skillet and let it rest for 5 minutes before drizzling with lemon juice and serving with the roasted asparagus.