Unlike most baked pasta recipes, this one starts with uncooked pasta so it's super convenient. With the added water and canned diced tomatoes, the pasta cooks in the oven along with the chicken and cheese for an easy one-dish meal.
Preheat oven to 375ºF. Place pasta, chicken and 1 cup of the cheese in 13x9-inch baking dish.
Mix water, Seasoning Mix and tomatoes until well blended. Pour over pasta and chicken. Stir to coat well, making sure most of the pasta is covered with sauce. Cover with foil.
Bake 45 minutes or until chicken is cooked through. Remove foil and stir. Sprinkle with remaining 1 cup cheese. Bake, uncovered, 5 minutes longer or until cheese is melted. Let stand 5 minutes. (Sauce will continue to thicken upon standing.)