Preheat the oven to 350 F. Lightly coat a 9-by-13-inch baking pan with cooking spray. In a small bowl, combine the 2 tomatoes, diced, 2 tbsp fresh basil, chopped, 1 tsp fresh oregano, chopped and 1 tbsp minced garlic. Add 2 tsp extra-virgin olive oiland mix well. Arrange the halibut fillets in the baking pan. Spoon the tomato mixture over the fish. Place in the oven and bake until the fish is opaque throughout, approx15 minutes.