Preheat the oven to 375°F (190°C) and lightly coat a 9x13-inch casserole dish with nonstick spray.
Add the rice and chicken broth to the baking dish and stir to combine.
In a separate bowl, mix together the chicken, corn, black beans, salsa, jalapeños, and seasonings until well combined.
Spoon the chicken mixture evenly over the rice. Do not stir—make sure the rice remains submerged in the broth to cook properly.
Cover the dish tightly with foil and bake for 20 minutes, or until the rice is tender.
Remove the foil, gently fluff the rice with a fork, and mix in the chicken filling. Sprinkle the shredded fiesta cheese over the top and return to the oven for another 5 minutes, or until the cheese is melted and bubbly.
Top with your favorite garnishes—green onions, cilantro, avocado, sour cream, or extra salsa—and enjoy!