01 - In a small bowl, whisk together the lemon juice, olive oil, minced garlic, sea salt, black pepper, and dried oregano or thyme until well combined.
02 - Arrange the fish fillets in a shallow dish and pour the marinade over them, turning each fillet to coat evenly. Let rest for at least 10 minutes and up to 30 minutes for deeper flavor.
03 - Preheat the oven to 400°F (200°C) if baking, or set a large non-stick skillet over medium heat if pan-searing.
04 - For baking: arrange the marinated fillets on a lined baking tray and bake for 12–15 minutes until the flesh turns opaque and flakes easily with a fork. For pan-searing: place fillets in the hot pan and cook 3–4 minutes per side until golden and cooked through.
05 - Transfer the cooked fillets to serving plates, sprinkle with chopped parsley, and accompany each portion with a lemon wedge.