1. Coat the bottom of a grill pan with olive oil and heat until super-hot. Brush olive oil on all sides of eggplant slices. Sprinkle each side with salt, pepper, and garlic powder; then place them in the hot pan.
2. Grill eggplant for two to three minutes at a time per side, flipping over twice to gain the grill marks, until eggplant is cooked.