Mediterranean Chicken, Bean & Pasta Soup

olive oil

large shallot, minced

medium carrots, cut into thin half-circles

large celery stalks, cut into 1/2-inch pieces

whole tomatoes, finely chopped, including juices

low-sodium chicken broth

bay leaves

chopped, cooked chicken

cannellini beans, drained and rinsed

ditalini (small, short pasta tubes)

finely chopped fresh parsley

fresh basil leaves, thinly sliced

Grated Parmesan cheese