Heat Grill to Medium {Place Brussels in a large microwave safe bowl, drizzle lemon juice over them. Microwave for 3 minutes. Alternatively, you can roast at 400 degrees f for about 15 minutes on a flat sheet pan. (Microwave method is a lot simpler)
Toss Brussels in olive oil, garlic, sea salt, & pepper.
Thread onto metal skewers(metal can handle the texture of the Brussels) alternate 2 sprouts to 1 small lemon wedge.
Grill about 5 minutes per side(turning once) on a preheated medium grill