Add the chicken to the bottom of the crockpot and add in the remaining ingredients except the chicken stock on top of the chicken in the order shown.
Next, sprinkle the taco seasoning over all the ingredients in the crockpot.
Pour in the chicken stock around the chicken and set the crockpot to cook for 4 hours on high or 8 hours on low.
Chop toppings as noted. Serve chili topped with tomato, avocado and cilantro.