Season both sides of lamb loin chops with salt and pepper. Let rest in the fridge for 15 minutes.
In a small bowl, add oil, lemon juice, garlic, onion powder and garlic powder, and mix well. Pour marinade over lamb loin chops, being sure to coat both sides well. Let rest for 45 minutes.
Season asparagus with salt and pepper, and drizzle with avocado oil
Heat grill to 375 degrees. Place lamb loin chops on grill and cook for about 6 minutes per side. Remove chops from grill, and place on plate to rest.
While lamb loin chops rest, add asparagus and lemon to the lowest heat portion of the grill, and cook for 3-4 minutes. Remove asparagus and lemon from grill. Squeeze a little bit of the grilled lemon onto the lamb loin chops, and serve