In 3- to 4-quart slow cooker, mix chicken, artichokes, pasta sauce and water.
Cover; cook on Low setting 5 to 6 hours.
About 25 minutes before serving, stir tomatoes and uncooked noodles into chicken mixture.
Increase heat setting to High; cover and cook 15 to 20 minutes longer or until noodles are tender. Sprinkle cheese over individual servings.