01 - Preheat oven to 400°F and line a baking dish with parchment paper or lightly grease it.
02 - Pat fish fillets dry with paper towels and arrange them evenly in the prepared baking dish.
03 - In a small bowl, whisk together olive oil, lemon zest, lemon juice, minced garlic, oregano, thyme, salt, and black pepper.
04 - Pour marinade evenly over fish fillets, ensuring each piece is thoroughly coated.
05 - Arrange thin lemon slices atop the coated fillets for additional flavor.
06 - Bake in the preheated oven for 15 to 20 minutes until the fish is opaque and flakes easily with a fork.
07 - Remove from oven, sprinkle with fresh parsley, and serve immediately.