Colorful Chicken Stew
1 lb. boneless skinless chicken breasts, cubed 1 (14 1/2 oz.) can Italian diced tomatoes, undrained 2 medium potatoes, peeled and cut into 1/2−inch cubes 5 medium carrots, chopped 3 celery ribs, chopped 1 large onion, chopped 1 medium green bell pepper, chopped 2 (4 oz.) cans mushroom stems and pieces, drained 2 low−sodium chicken…