Combine the filling

• Add the shredded rotisserie chicken, cream of chicken soup, frozen mixed vegetables and milk to a bowl.
• Season with salt, pepper, garlic powder and onion powder.
• Mix everything together until well combined.

Fill the baking dish

• Spray a 9x13 baking dish.
• Pour the mixture into the dish and spread it out evenly.

First bake

• Place the dish in a 375 °F oven.

Top with biscuits

• Open the can of jumbo biscuits and quarter them with kitchen scissors.
• Place the biscuit pieces on top of the filling, spaced out and not overlapping so the heat can get between them.

Second bake

• Return the dish to the 375 °F oven until the biscuits are light, fluffy and brown on top.