Chicken-and-Black Bean Enchiladas

chopped cooked chicken (about 1 rotisserie chicken)

black beans, rinsed and drained

diced tomatoes with green chiles

no-salt-added corn, drained

shredded reduced-fat Mexican four-cheese blend, divided

(8-inch) whole wheat flour tortillas

Vegetable cooking spray

enchilada sauce

Garnish: cilantro sprig