Heat a large skillet over medium heat.
Cook sliced onions and bell peppers until softened and fragrant.
Remove from heat and set aside.
Season chicken with fajita seasoning.
Sear in the same skillet for a few minutes on each side until browned.
Cut into bite-sized pieces.
Preheat oven to 375°F (190°C).
In a greased 9x13-inch baking dish, spread the uncooked rice evenly.
Add chicken broth, seasoned chicken, and sautéed veggies.
Stir to combine.
Cover with foil and bake for 35-40 minutes, or until the rice is tender and chicken is fully cooked.
Remove foil and sprinkle cheese over the top.
Bake uncovered for another 5-10 minutes, or until the cheese is melted and bubbly.
