Preheat oven to 350 degrees and coat a 9x13 baking dish with cooking spray.
In a small bowl, combine chili powder through dried oregano, stir and set aside.
In a large bowl, combine rice through black beans. Stir to combine and then add spice blend, stirring to combine again.
Line the bottom of the baking dish with chicken strips in a single layer. Pour rice and vegetable mixture over chicken. It is important to place the chicken on the bottom against the baking dish and near the heating element of the oven to make sure it is cooked all the way through.
Cover with aluminum foil, tightly sealing around the edges to create a steamer for rice.
Bake, covered, for 50 minutes. Remove, uncover and fluff rice with a fork before returning to the oven for an additional 10 minutes.
Remove and serve. Top with avocado, sour cream and Mexican cheese blend, if desired.
If you've tried this recipe, come back and let us know how it was!