King Ranch Chicken Mac and Cheese

King Ranch Chicken Mac and Cheese 1/2 (16-oz.) package pasta (I used Gemelli) 2 tablespoons butter 1 medium onion, diced 1 green bell pepper, diced 1 (10-oz.) can Rotel diced tomatoes and green chiles (spicy) 1 (8-oz.) package Velveeta pasteurized prepared cheese product, cubed 3 cups chopped cooked chicken 1 (10¾-oz.) can cream of chicken soup 1/2 cup sour cream 1 teaspoon ancho chili powder 1/2 tsp ground cumin 1 cup (4 oz.) shredded Cheddar cheese 1/2 cup (2 oz.) shredded Monterey Jack cheese 1/2 cup crushed Dorito chips Preheat oven to 350 degrees. Cook pasta according to package directions. Melt butter in a Dutch oven over medium heat. Add onion and bell pepper and cook 5 minutes. Stir in Rotel tomatoes and Velveeta cheese. Cook, stirring continuously until cheese melts. Mix in chicken, cream of chicken soup, ancho chili powder, and cumin. Add pasta and half of both cheddar cheese and Monterey cheese. Pour into a greased 10-inch cast iron pan or 11X7-inch casserole dish. Sprinkle with remaining cheese and crushed Doritos. Bake until bubbly, for 25 to 30 minutes.