For the best texture, add zucchini noodles only when you are ready to serve and avoid overcooking them so they stay pleasantly al dente. If you plan to meal prep, store the broth and chicken mixture separately from the raw or barely blanched zoodles, then combine and heat briefly just before eating. You can substitute cooked shredded rotisserie chicken by simmering the vegetables and broth first, then adding the chicken and zoodles at the end to warm through. Adjust the water amount to create a thinner or heartier soup depending on your preference, keeping in mind that flavors concentrate slightly as the soup sits.