Prepare a 9 X 13 Inch baking pan with nonstick cooking spray.
In a large bowl, whisk the sour cream, cottage cheese, cream of chicken soup, cream cheese, chicken broth, cream of mushroom soup, milk, garlic powder, and onion powder together.
Mix in the uncooked pasta and cooked chicken.
Pour the entire bowl mixture into the prepared baking dish.
Cover with foil or saran wrap and refrigerate overnight, about 8 hours.
When ready to bake, take the dish out of the refrigerator and uncover it.
Preheat the oven to 350℉.
Top the pasta with the shredded mozzarella and grated parmesan cheese.
Bake for 1 hour, uncovered.
Sprinkle with Italian Parsley. Serve warm.