Grease 9x9" baking dish. Preheat oven to 375 degrees F.
In a large skillet, heat olive oil over medium-high heat.
Add the chicken pieces and cook until cooked through, about 8-10 minutes.
Add the taco seasoning, black beans, corn, and salsa, and stir well to combine.
Add in cooked Spanish rice and 1 cup of cheese, and stir well to combine.
Transfer to prepared baking dish and top with remaining 1 ½ cups of cheese.
Bake in preheated oven for 20-25 minutes, until cheese is melted.
Serve topped with avocado. Other topping options: diced green onions, salsa, sour cream.
