01 - Preheat oven to 375°F. Lightly grease a 9x13-inch baking dish with cooking spray or oil.
02 - In a large bowl, mix uncooked rice, diced onion, red bell pepper, corn, black beans, diced tomatoes with chilies including juices, chicken broth, cumin, smoked paprika, chili powder, garlic powder, salt, and pepper until well combined.
03 - Pour the rice and vegetable mixture evenly into the prepared baking dish, spreading it out to create an even layer.
04 - Nestle the seasoned chicken pieces into the rice mixture, distributing them evenly throughout the dish.
05 - Cover the baking dish tightly with aluminum foil. Bake for 35 minutes or until rice has absorbed most of the liquid and chicken is cooked through.
06 - Remove the foil and sprinkle shredded Mexican cheese blend evenly over the top. Return to oven and bake uncovered for 10-15 minutes until cheese is melted and bubbly with light golden spots.
07 - Let the casserole rest for 5 minutes to allow the flavors to meld and the rice to set. Garnish with fresh cilantro, sliced jalapeños, sour cream, and lime wedges as desired before serving.