For a creamier soup, stir in a dollop of sour cream or Greek yogurt before serving. Add a squeeze of lime juice for extra zing! Garnish with your favorite taco toppings, such as shredded cheese, avocado, or cilantro. Feel free to substitute ground turkey or beef for the chicken. If you don't have rotisserie chicken, you can use about 1.5 pounds of boneless, skinless chicken breasts. Cook the chicken by baking, poaching, or using an instant pot and then shred it.