In a 6-8 quart slow cooker add the chopped vegetables, green chilis, chicken, drained white beans, ranch seasoning, chicken broth and buffalo sauce. Secure the lid and heat the soup on low for 6-8 hours.
Remove the chicken and shred with two forks. Add the chicken back to the soup, add the cream cheese and shredded cheddar, whisk until the cheese has disolved.
Serve with tortilla chips, shredded cheddar, green onions and additional buffalo sauce if desired.