Creating this Mediterranean Baked Fish can be straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C).
2. Prepare Baking Dish: Lightly grease a baking dish with olive oil.
3. Arrange Fish: Place the fish fillets evenly in the baking dish.
4. Add Seasoning: Drizzle olive oil over the fish. Season with salt, pepper, and oregano.
5. Layer Vegetables: Evenly distribute the minced garlic, cherry tomatoes, sliced bell pepper, and olives on top of the fish.
6. Add Lemon: Lay lemon slices on top of the vegetables and fish.
7. Bake: Place the baking dish in the preheated oven. Bake for 20-25 minutes, or until the fish flakes easily with a fork.
8. Garnish: Remove the dish from the oven and garnish with chopped parsley just before serving.
9. Serve: Carefully dish out the fish and vegetables onto plates, ensuring to include the pan juices.

Following these steps meticulously will ensure you create an outstanding Mediterranean Baked Fish that is not only flavorful but also visually appealing.