Place chicken breasts in the slow cooker.
Add white beans, corn, onion, garlic, and diced green chilies.
Pour in chicken broth and stir in ground cumin, oregano, chili powder, cayenne pepper, salt, and black pepper.
Cover and cook on low for 6-7 hours or on high for 3-4 hours until chicken is cooked through.
Remove chicken breasts and shred with two forks.
Return shredded chicken to the slow cooker.
Add cream cheese and stir until melted and creamy.
Stir in sour cream and mix well.
Serve chili topped with shredded cheese, fresh cilantro, avocado slices, lime wedges, and optional red pepper flakes.
Serve with tortilla chips if desired.