Cook the Normandy blend vegetables according to package instructions and drain well. You don't want any extra water in the casserole, it will prevent the biscuits from cooking properly.
Cut the biscuits into 10 pieces each and place them inside a large food storage bag.
Add the Old Bay seasoning and garlic powder to the bag and seal. Shake the bag to coat all of the biscuit pieces. Set aside.
Add chicken breast, cheddar cheese soup, and Normandy blend vegetables to the baking dish. Mix to combine.
Add the biscuits to the mixture.
Bake for 35-38 minutes until the biscuits are browned and cooked through. Removed from the oven.
Sprinkle with shredded cheese and return to oven for an additional 2-4 minutes (just until cheese is melted).