Cook and shred the chicken.

Chop the green pepper and onion.

Combine the cooked chicken, chopped green pepper, chopped onion, cream of mushroom soup, cream of chicken soup, and Ro-Tel tomatoes in a large bowl.

Mix all the ingredients thoroughly.

In a baking dish, create a layer of Doritos chips.

Spread half of the chicken mixture over the Doritos layer.

Sprinkle a layer of shredded cheddar cheese over the chicken mixture.

Pour half of the chicken broth over the cheese layer.

Repeat the layering process with the remaining Doritos, chicken mixture, cheese, and chicken broth.

Bake in a preheated oven at 375°F (190°C) until bubbly and the cheese is melted and golden brown, approximately 40 minutes.

Let stand for 5 minutes before serving.