For an extra layer of flavor, consider adding a pinch of garlic powder or onion powder to the chicken before cooking. To save time, you can use pre-cooked bacon and rotisserie chicken. Feel free to adjust the amount of Mexican cheese blend to your liking. If you don't have green onions, chives or a finely diced shallot can be substituted. This casserole can be assembled ahead of time and stored in the refrigerator for up to 24 hours before baking. Add an extra 10-15 minutes to the baking time if baking directly from the refrigerator.