Place the four chicken breasts at the bottom of the slow cooker.
In a large bowl, stir together black beans, salsa, Rotel Chopped Tomatoes and Green Chilies, garlic, chili powder, cumin, red pepper flakes, paprika, onion powder and oregano. Pour over chicken in slow cooker.
Cook on low heat for 8 to 10 hours until chicken is fully cooked.
Shred chicken with two forks. Stir to combine with the salsa.
Serve alone or on a bed of rice. Top with freshly chopped cilantro, if desired.