01 - Preheat oven to 400°F. Lightly grease a baking dish with cooking spray or olive oil.
02 - Pat tilapia fillets dry with paper towels and place them in a single layer in the prepared baking dish.
03 - In a small bowl, mix parsley, dill, basil, garlic, lemon zest, salt, and black pepper until well combined.
04 - Drizzle olive oil over the fillets, then evenly sprinkle the herb mixture on top.
05 - Arrange thinly sliced lemon pieces atop the fillets to infuse flavor while baking.
06 - Bake for 18 to 20 minutes, until fish is opaque and flakes easily with a fork.
07 - Serve immediately, garnished with additional fresh herbs if desired.