Spray with non-stick cooking spray or line with a slow cooker bag.
Place chicken breasts in slow cooker and season both sides with taco seasoning, cumin, salt and pepper.
Pour black beans, diced tomatoes, corn, minced garlic and stir to combine. Cover, cook on high for 2 1/2 hours, or until chicken is cooked through.
Remove chicken to a cutting board and let cool for a few minutes. Shred into bite size pieces; set aside.
Add Velveeta and 3/4 of the shredded cheese to slow cooker. Cover and cook 15 minutes. Mix together with a whisk.
Add in bell peppers, shredded chicken and remaining cheese. Cover for additional 5 minutes.
Mix in cooked rice and cilantro, cover for 10 more minutes, or until hot.
Garnish, serve and enjoy!