Preheat your grill to medium-high heat (about 400°F/200°C). If using an indoor grill pan, heat it over medium-high heat with a light coating of oil.
In a small bowl, whisk together 2 tablespoons of olive oil, the lemon zest, lemon juice, minced garlic, oregano, thyme, smoked paprika, salt, and black pepper to create a marinade.
Pat the sea bass fillets dry with paper towels. Brush both sides of the fillets with the marinade, ensuring they’re well coated. Let them sit for 5-10 minutes to absorb the flavors.
Lightly brush the grill grates with the remaining 1 tablespoon of olive oil to prevent sticking. Place the sea bass fillets on the grill, skin-side down if applicable. Grill for 4-5 minutes per side, depending on thickness, until the fish flakes easily with a fork and reaches an internal temperature of 145°F (63°C). Avoid overcooking to keep it tender.
Carefully remove the fillets from the grill using a spatula. If any marinade remains, drizzle it over the cooked fish for extra flavor.
Transfer the grilled sea bass to a serving platter. Garnish with fresh parsley or dill if desired, and serve with lemon wedges on the side. Enjoy your grilled Mediterranean sea bass hot, paired with a side of veggies or a salad!