01 - Preheat the oven to 400°F.
02 - Pat the fish fillets dry with paper towels and place them in a lightly greased baking dish.
03 - In a small bowl, whisk together olive oil, lemon juice, minced garlic, oregano, thyme, salt, and pepper.
04 - Brush the marinade evenly over both sides of the fish fillets.
05 - Arrange lemon slices on top of the fillets.
06 - Bake in the preheated oven for 18-20 minutes, or until the fish flakes easily with a fork.
07 - Garnish with chopped parsley before serving.