Mediterranean Baked Fish with Tomatoes

Prepare the Fish:

Place the fish fillets on a baking sheet lined with parchment paper or lightly greased. Drizzle with 1 tablespoon of olive oil and season with salt and pepper to taste.
Prepare the Vegetable Mixture:

In a medium skillet, heat the remaining 1 tablespoon of olive oil over medium heat. Add the sliced onion and minced garlic, cooking for 2-3 minutes until softened and fragrant.
Add the cherry tomatoes and dried oregano to the skillet, stirring occasionally, and cook for 5-7 minutes until the tomatoes begin to soften and release their juices.
Add Lemon and Olives:

Stir in the lemon zest, fresh lemon juice, capers (if using), and Kalamata olives. Cook for an additional 2 minutes to combine the flavors.
Assemble the Dish:

Spoon the tomato and olive mixture evenly over the fish fillets, ensuring the fish is covered in the flavorful mix.
Bake:

Place the baking sheet in the preheated oven and bake for 12-15 minutes, or until the fish is cooked through and flakes easily with a fork.
Serve:

Garnish with fresh parsley or basil before serving.
Serving and Storage Tips