Nacho Cheese Chicken Chowder

skinless, boneless chicken breast halves, cut into 1/2-inch pieces

14 1/2 - ounce cans Mexican-style stewed tomatoes

10 3/4 - ounce can condensed nacho cheese soup

10 - ounce package frozen whole kernel corn (2 cups)

Shredded Mexican-style or cheddar cheese