01 - Preheat the oven to 400°F. Lightly grease a baking dish with olive oil.
02 - Combine softened butter, parsley, dill, chives, garlic, lemon zest, lemon juice, salt, and black pepper in a small bowl until thoroughly mixed.
03 - Pat cod fillets dry with paper towels and place them evenly in the prepared baking dish.
04 - Spread the herb butter mixture evenly over each fillet.
05 - Bake for 15 to 18 minutes, or until the fish flakes easily with a fork and becomes opaque throughout.
06 - Serve immediately accompanied by lemon wedges.