01 - Preheat oven to 400°F. Line a baking sheet with parchment paper or lightly grease a baking dish.
02 - Pat fish fillets dry with paper towels and arrange in a single layer on the prepared baking sheet.
03 - In a small bowl, whisk together olive oil, lemon juice, lemon zest, minced garlic, oregano, salt, and pepper until well combined.
04 - Drizzle the marinade evenly over all fish fillets, coating thoroughly on both sides.
05 - Bake for 15-20 minutes until fish is opaque and flakes easily with a fork, adjusting time based on fillet thickness.
06 - Remove from oven, sprinkle with fresh parsley, and serve immediately with lemon wedges.