Massage the packet of the taco seasoning into the chicken breast halves and place in the pan. Add in the drained and rinsed corn and black beans around the chicken. Pour the salsa on top.
Bake for 22-32 minutes or until the chicken is cooked most of the way through (internal temperature around 150 degrees F). Sprinkle the cheese evenly over the chicken and bake for another 3-5 minutes or until cheese is melted. and chicken is at 160 degrees F. (Carry over heat will bring it to 165 degrees F)