There are so many ingredients you could add to this baked rice! First, you can add a variety of herbs, including oregano, basil, rosemary, or Italian seasoning. You could add chopped olives, scallions, bacon, pancetta, chorizo, or other sausages. For heat, you could add jalapenos or other chile peppers. And of course, you could add additional sauteed veggies, such as red peppers, zucchini, or carrots.