These quesadillas are a great way to use up leftover rotisserie chicken. Simply shred the chicken and add it to a tortilla with some shredded cheese and diced tomatoes. Fold the tortilla in half and cook it in a skillet until the cheese is melted and the tortilla is crispy. You can also add some salsa or guacamole for extra flavor. These quesadillas are quick, easy, and perfect for a snack or lunch.