Use 1 lb rotisserie chicken or cook and shred the chicken.
You can do this by boiling a pot of water and cooking the chicken breasts in the water for about 30 minutes until cooked through. Then shred the chicken with 2 forks. You can do this ahead of time. Make extra and freeze for another time you need chicken!
Preheat the oven to 375 degrees. Place a few spoonfuls of enchilada sauce in the bottom of a glass square 9 x 9 baking dish. Place 2 tortillas in the bottom of the dish, overlapping to cover the surface. Layer the chicken, beans,cheese, sauce, and tortillas; repeat once to make a total of 2 layers. You may have to tear the tortilla layers to fit.
Cover the top with the remaining enchilada sauce and 1 cup cheese. Bake for 30 minutes.
Allow to rest for about 10 minutes before cutting and serving . Top with sliced green onions, chopped tomato, avocados ect .