01 - Preheat the oven to 400°F. Lightly grease a baking dish large enough to fit the tilapia fillets in a single layer.
02 - Pat the tilapia fillets dry with paper towels. Season both sides with salt and pepper, then place in the prepared baking dish.
03 - In a small bowl, whisk together the melted butter, lemon juice, lemon zest, and minced garlic until well combined.
04 - Pour the lemon butter sauce evenly over the tilapia fillets, ensuring each piece is well coated.
05 - Top each fillet with a thin lemon slice for presentation and extra citrus flavor.
06 - Bake for 15–18 minutes, or until the fish is opaque and flakes easily with a fork.
07 - Remove from oven and garnish with additional chopped parsley before serving.