Step 1

Preheat the oven to 350 degrees Fahrenheit and grease a 9x13-inch baking dish with cooking spray.

Step 2

In a medium skillet, heat the oil over medium high heat, add in the green bell pepper, red bell pepper, and onion. Season with salt and pepper and sauté until the vegetables are tender.

Step 3

In a large bowl mix together the sauteed vegetables, shredded chicken, tomatoes, green chiles, cream of mushroom soup, cream of chicken soup, garlic powder, chili powder, salt and pepper.

Step 4

In a separate bowl, mix together the cheddar and pepper jack cheeses.

Step 5

In the bottom of the baking dish layer enough tortilla chips to cover the dish in an even layer. Pour ½ of the chicken mixture on top of the tortilla chips and ½ of the cheese mixture on top of the chicken.

Step 6

Repeat these layers 1 more time for a total of 2 layers of chips, chicken, and cheese, ending with the last layer of cheese.

Step 7

Bake the casserole until the top is bubbly and golden about 20-30 minutes. Remove the casserole from the oven and let it rest for at least 10 minutes before serving.