These easy, cheesy chicken enchiladas come together in a snap and are faster and way more delicious than fast food. If you have leftover roast chicken, use that here. Alternatively, you can buy a rotisserie chicken if you don't feel like cooking your own. Also, don't use corn tortillas, as these have a tendency to break and be hard to roll. Whatever you do, though, don't forget the fresh tomato, avocado, cilantro, and green onion topping—the freshness livens up the dish.