Speedy Chicken Potpie

Cooking spray

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

salt

fat-free, less-sodium chicken broth, divided

bay leaf

refrigerated diced potatoes with onion (such as Simply Potatoes)

frozen green peas and diced carrot blend

all-purpose flour

chopped fresh thyme

black pepper

dried rubbed sage

refrigerated piecrust dough