01 - Preheat the oven to 400°F. Line a baking dish with parchment paper or lightly grease it with olive oil.
02 - Pat the cod fillets dry with paper towels and arrange them in a single layer in the prepared baking dish.
03 - In a small bowl, whisk together olive oil, lemon juice, lemon zest, garlic, parsley, dill, chives if using, salt, and black pepper until combined.
04 - Spoon the herb and lemon mixture evenly over the cod fillets, ensuring thorough coverage. Place a few lemon slices atop each fillet for enhanced flavor.
05 - Bake for 15 to 18 minutes, or until the fish flakes easily with a fork and is opaque throughout. Avoid overcooking to maintain tenderness.
06 - Serve immediately, garnished with additional fresh herbs and lemon wedges if desired.