Cook the pasta to al dente, drain and transfer to a large mixing bowl.
Add in the cooked chicken, chopped bacon or bacon bits, cheese, corn, Rotel, diced green chiles, ranch dressing, bbq sauce, and minced onions. Toss to combine.
Transfer the mixture to a casserole dish and top with additional cheese if desired.
Bake for 15-20 minutes or until hot and cheese is melted.