Pre heat bar-b-q grille. Cut avocados into thick wedges, leaving skin on. Mix 2 tablespoons olive oil with hot sauce and brush each wedge with oil mixture. Sprinkle wedges with garlic powder, salt and pepper. Allow wedges to marinate for at least 15 minutes, then place on a hot bar-b-q grille. Grille wedges for 2-3 minutes per side.