Chiarello's Chicken and Pastina Soup

Ingredients

✓ 1 tablespoon olive oil
✓ 1 cup Muir Glen® organic crushed tomatoes with basil
✓ 2 pounds boneless skinless chicken breasts
✓ ½ cup chopped onion
✓ ½ cup diced carrot
✓ ½ cup diced celery
✓ 2 (32 ounce) cartons Progresso® chicken broth
✓ ½ teaspoon gray salt or sea salt
✓ ¼ teaspoon freshly ground black pepper
✓ 1 dried bay leaf
✓ 1 cup uncooked acini de pepe or small round pasta
✓ 2 cups chopped, lightly packed mustard greens, spinach, Swiss chard or other greens
✓ ⅓ cup shredded Parmesan cheese