Add cherry tomatoes, olive oil, tomato sauce, chopped onion, peppers, jalapeño (if using) to an oven safe baking dish. Sprinkle in garlic, cumin, paprika, chili powder, salt and pepper and mix it together.
2 Tablespoons olive oil, 1 small onion, 2 cloves garlic, 3/4 cup roasted red pepper, 1 jalapeño, 2 cups cherry tomatoes, sliced in half, 1/4 cup canned tomato sauce, 1 teaspoon cumin, 2 teaspoon chilli powder, 1 teaspoon paprika, 1/2 teaspoon salt, 1/4 teaspoon freshly ground black pepper