Yes, you can use tomato sauce instead of pizza sauce for a pizza tortilla. However, you may need to add seasoning to get a similar flavour, as some tomato sauce is only seasoned with salt.   If you have extra time and want a more filling meal, consider adding these yummy Italian-inspired dishes to the table with the crispy tortilla pizza: Pesto Pasta Salad, Tricolore Salad, and Sun-Dried Tomato and Orzo Salad.