01 - Preheat the oven to 400°F (200°C). Line a baking dish with parchment paper or grease lightly.
02 - Pat the cod fillets dry with paper towels and place them evenly in the prepared baking dish.
03 - In a small bowl, whisk together olive oil, lemon juice, minced garlic, dried oregano, dried thyme, salt, and black pepper.
04 - Brush or spoon the marinade evenly over the cod fillets to coat thoroughly.
05 - Arrange lemon slices on top of and around the cod fillets in the baking dish.
06 - Bake in the preheated oven for 15 to 18 minutes, or until the cod flakes easily with a fork and is opaque throughout.
07 - Remove from oven, sprinkle with fresh chopped parsley, and serve immediately.