DASH Diet Mexican Bake

1 ½ cups cooked rice, preferably brown

1 pound skinless, boneless chicken breast, cut in bite-sized pieces

2 (14.5 ounce) cans no-salt-added tomatoes, diced or crushed

1 (15 ounce) can no-salt-added black beans, drained and rinsed

1 cup frozen yellow corn kernels

1 cup chopped red bell pepper

1 cup chopped poblano pepper

1 tablespoon chili powder

1 tablespoon cumin

4 garlic cloves, crushed

1 cup shredded reduced-fat Monterey Jack cheese

¼ cup jalapeno pepper slices (Optional)