Spray the inside of slow cooker with non-stick cooking spray.
Place chicken breasts inside of slow cooker. Add all ingredients except for cream cheese and blue cheese, mix together.
Add the block of cream cheese on top of other ingredients and cover with lid. Cook on low heat for 7-8 hours (or high heat for 3-4 hours).
When finished cooking, remove chicken breasts from slow cooker and shred using bear claws or two forks. Return chicken to slow cooker and mix in, making sure to incorporate the cream cheese.