01 - Preheat oven to 400°F (200°C). Lightly grease a baking dish large enough to hold the fillets in a single layer.
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 melted butter, minced garlic, lemon juice, sea salt, and black pepper until combined.
04 - Pour the garlic butter mixture evenly over the cod fillets, ensuring each is well coated.
05 - Sprinkle chopped parsley, dill, and chives over the fillets.
06 - Bake for 15 to 18 minutes, until the cod flakes easily with a fork and is opaque throughout.
07 - Garnish with lemon slices before serving.