Combine all ingredients in slow cooker and mix well, making sure that the chicken breasts are covered. Cook on low for 6-7 hours or high for 3-4 hours.
Shred chicken with two forks, then mix well.
Scoop into bowls and top with your favorite toppings.
Recipe by Tone and Tighten at https://tone-and-tighten.com/slow-cooker-tex-mex-chicken-chili.html