Coat ceramic insert with cooking spray, preheat on high.
Add chicken stock, garlic, cumin, oregano, salt, crushed red pepper, and chicken breasts.
Stir gently to combine.
Cover with lid and cook on low 6-8 hours or high 3-4 hours
Just before serving remove chicken and shred with 2 forks.
Return shredded chicken to slow cooker.
Add the beans, corn, lime juice, and cilantro.
Warm through and serve.
Can be served with additional lime wedges and cilantro, if desired,