To make this recipe in a slow cooker, you will need 1 1/2 pounds of boneless, skinless chicken breasts instead of cooked, shredded chicken. Put all of the ingredients, except the chicken breasts, into a slow cooker and stir to combine. Add the chicken breasts and coat them with the sauce. Cover and cook on low for 4-5 hours. Remove the chicken, shred it, and return it to the crockpot. Stir to coat it with the sauce, replace the cover, and cook for an additional 30 minutes.