In a large bowl, whisk together cream of chicken soup, milk, garlic powder, onion powder, dry parsley flake, Italian seasoning, and black pepper.
Fold chicken and frozen mixed vegetables into soup mixture.
Grease muffins pan. Open the biscuit cans and separate biscuits. Flatten each biscuit in palms of hands. Press 1 biscuit into each muffin cup, pressing biscuit dough into bottom and up sides. Note: There will be 4 leftover biscuits.
Make sure biscuit dough is firmly pressed into bottom and up sides of muffin tin before filling. Spoon chicken mixture into each biscuit cup.
Bake for 20 minutes or until biscuit is golden brown and filling is bubbling.
Let mini pot pies sit in muffin pan for 5 minutes before serving