In a medium saucepan, bring the rice and water to a boil. Reduce heat to low, cover, and simmer for 20 minutes, or until the rice is tender.
Heat the olive oil in a skillet over medium heat. Add the onion and garlic and cook, stirring, until the onion is softened, about 5 minutes.
Stir in the chili powder, cumin, salt, and pepper. Add the chicken and cook, stirring, until heated through, about 2 minutes. Stir in the salsa, remove from heat, and set aside.
In a 9x13 inch baking dish, spread the cooked rice. Top with the chicken mixture, then sprinkle with the cheese.
Bake in preheated oven for 20 minutes, or until the cheese is melted and bubbly.
Interesting Facts
This casserole is a great way to use up leftover chicken.
You can use any type of salsa for this dish - mild, medium, or hot.
Add more vegetables, like bell peppers, to the dish to make it even more nutritious.