If desired, Thaw overnight in fridge or in the morning in water (meal may not be 100% thawed but that is ok).
Dump contents of gallon freezer bag into slow cooker.
Cook on low 6-8 hours or high 3-4 hours.
Shred chicken, remove bones, and stir back into sauce in slow cooker.
Serve in preferred tortillas or over cauliflower rice with favorite taco toppings!