Buffalo Chicken Soup

Name: Buffalo Chicken Soup
Ingredients: 2 large chicken breasts, cut into chunks; 1/4 cup whole wheat flour; salt and pepper to taste; 2 tablespoons unsalted butter, divided; 1 onion, diced; 2 carrots, peeled and sliced; 2 stalks of celery, sliced; 4 cups chicken broth; 1/4 to 1 cups Frank's Red Hot Sauce; 1 cup shell pasta; blue cheese, for topping