01 - Preheat your oven to 400°F. Lightly grease a baking dish large enough to hold the fillets in a single layer.
02 - Pat the tilapia fillets dry with paper towels. Brush both sides with olive oil, then season with salt and black pepper.
03 - Arrange the fillets in the prepared baking dish.
04 - In a small bowl, whisk together melted butter, lemon juice, lemon zest, and minced garlic. Drizzle the lemon butter sauce evenly over the fillets.
05 - Bake for 15-18 minutes, or until the fish flakes easily with a fork and is opaque throughout.
06 - Remove from the oven and sprinkle with chopped parsley. Serve immediately with lemon wedges, if desired.