Preheat your oven to 400°F (200°C) and lightly grease your baking dish with 1 tablespoon of olive oil.

Place fish fillets in the greased baking dish. Drizzle remaining olive oil over fillets and season with salt, black pepper, oregano, and thyme.

Spread cherry tomatoes, Kalamata olives, minced garlic, and sliced red onion over the seasoned fish.

Lay fresh lemon slices over the fish and sprinkle with red pepper flakes if desired.

Bake uncovered for 15 to 20 minutes until the fish is opaque and flakes easily with a fork.

Remove from the oven, let cool slightly, and garnish with chopped parsley before serving.