Mix cumin, salt, garlic, smoked paprika and cayenne. Place chicken breasts in the crockpot and toss in the seasoning mixture.
Add white beans, pinto beans, sweet corn, onion, diced chiles and chicken broth to the crock pot and stir to mix everything together.
Cook on high for 2-3 hours or on low for 5-6 hours. Check the chicken for an internal temperature of at least 165F, remove from the slow cooker and shred with 2 forks.
Mix the sour cream with a little bit of broth from the slow cooker to prevent separation, then pour this creamy mixture back into the crockpot along with the shredded chicken.
Switch the crockpot to keep warm and serve bowls of the chili directly from the crockpot.
Notes
You could use rotisserie chicken in place of the chicken breasts.
Store in an airtight container and keep in the fridge for up to 4 days.
Freezer instructions: Store in a freezer safe container and keep in the freezer for up to 6 months.