I adapted this recipe from a book called Pure Poultry. I wanted a soup that was hearty, yet still felt fairly light. This really fit the bill. The pesto really adds to the flavor of the final dish, so I highly recommend using it. Serve with a loaf of italian bread to soak up the remaining broth. If you have homemade chicken stock, use it here- the flavor really comes through. When you are prepping your ingredients, remember to cut them in small pieces, so they will fit on your spoon.