Add the first 8 ingredients into a slow cooker, chicken broth through chicken breast. Cover and cook on low heat for 4-6 hours.
Once the chicken has cooked, remove, and shred it with two forks. Add chicken back into the soup, and salt to taste. Turn the temperature down to low until ready to serve.
When you are ready to serve, stir in the cilantro. Serve in bowls and top with cheese, sour cream, and any other toppings you would like.