Prepare the Marinade: In a medium bowl, combine 3 tablespoons of olive oil, juice and zest of 2 lemons, minced 4 cloves of garlic, 1 teaspoon of salt, and 1/2 teaspoon of black pepper. Whisk together until well blended.
Marinate the Fish: Place the 4 sea bass fillets in a shallow dish or resealable bag, and pour the marinade over the fish. Ensure that each fillet is coated thoroughly. Cover the dish with plastic wrap or seal the bag. Let it marinate in the refrigerator for at least 30 minutes to allow the flavors to infuse.
Preheat Your Oven: While the fish is marinating, preheat your oven to 400°F (200°C). This ensures the fish will cook evenly and achieve a nice, flaky texture.
Prepare for Baking: Line a baking dish with parchment paper or lightly grease it with cooking spray. This will prevent the fish from sticking and make for easier cleanup after cooking.
Bake the Sea Bass: After marination, remove the fillets from the refrigerator. Place the fillets on the prepared baking dish, skin side down. Pour any remaining marinade over the top of the fillets. Bake in the preheated oven for 15-20 minutes or until the fish is cooked through and flakes easily with a fork. The internal temperature should reach 145°F (63°C).
Garnish and Serve: Once cooked, take the baking dish out of the oven. Transfer the fillets to individual plates or a serving platter. Garnish with chopped fresh parsley for added color and freshness. Serve immediately, pairing with your choice of sides.