Place chicken breasts in a large (5qt) slow cooker. Drain the black beans and add to the slow cooker, along with the salsa and corn. Next, add 1/4 cup water, along with the minced garlic, chili powder, cumin, oregano, cayenne, and freshly cracked pepper. Stir until combined.
Cook on low for 8 hours or high for 4 hours.
When finished, use a fork to shred the chicken, and stir everything once more.
Optional) Add freshly shredded cheese. Eat as is or with tortilla chips