Place chicken breasts at the bottom of the Crock Pot.
Add taco seasoning and ranch seasoning mix over the chicken.
Pour in canned black beans, corn, and Rotel tomatoes with their juices.
Place the cream cheese on top of all ingredients.
Cook on LOW for 6-8 hours or on HIGH for 3-4 hours.
When done, remove chicken breasts and shred them with two forks.
Stir the chili to mix the melted cream cheese thoroughly.
Add shredded chicken back into the chili and stir to combine.
Serve topped with optional toppings like tortilla strips, shredded cheese, avocados, lime juice, and cilantro as desired.