Cook on high for 4 hours, or low for 8 hours.
Shred the chicken in the crock pot using two forks. Stir the tortilla strips into the chicken and enchilada sauce.
Add 1 cup of cheese and 1/2 cup of olives and stir to combine. Sprinkle the remaining cheese and olives over the top.
Cover and continue to cook on low for 40-60 minutes.
Remove the cover and let stand 10 minutes before serving. Serve hot with sour cream on top.