Combine chicken broth, beans, corn, tomatoes, cilantro, scallions, garlic powder, onion powder, cumin, cayenne pepper and salt in the crock pot
Season chicken breast with salt and lay on top.
Cook on low for 10 hours or on high for 6 hours.
Half hour before serving, remove chicken and shred.
Return chicken to slow cooker and stir in. Adjust salt and seasoning.
Serve over rice with sour cream and fat free cheddar cheese.