Sprinkle the chicken with cumin and garlic salt and place in the crock pot along with the lime juice and cream cheese. Cook in the crock pot on high for about 2 hours or low for about 4, until the chicken is white and soft enough to shred apart with two forks.
Add all remaining ingredients and cook for an additional 2 hours on high or 4 hours on low.
Serve over a bed of lettuce, rice, or with soft or hard taco shells!