Heat oil over medium heat in a 10-inch skillet; cook onions until starting to turn translucent, about 3 minutes. Add garlic and cook 1 minute more. Stir in Sandridge Fully Cooked Chicken Breast chunks and chili powder. Add diced green chilies, fire-roasted tomatoes with juices, black beans, and water. Cover and simmer until heated through and flavors blend, about 10 minutes.
Add Sandridge Chili Lime Rice and corn. Stir to combine, cover and bring to a simmer. Reduce heat to low and cook, covered for 7 minutes. Turn off heat and let sit, covered, for an additional 5 minutes.
Serve garnished with cheese and tortilla chips, if desired.