Preheat the oven to 375 F. In a medium bowl, mix together the shredded chicken, cream of chicken soup, frozen veggies, milk, sour cream, cheddar cheese, parsley, onion, salt, and pepper
Cut each biscuit into fourths and carefully fold them into the chicken mixture.
Grease a 9 x 13-inch casserole dish and spoon the mixture evenly onto the dish. Bake for 35-45 minutes or until the biscuits are slightly brown on top and cooked through.