Preheat your oven to 375°F (190°C).
In a large skillet, melt the butter over medium heat.
Add the mixed vegetables and cook until they are tender, about 5-7 minutes.
Sprinkle the flour over the vegetables and stir well to combine.
Slowly whisk in the chicken broth and milk, cooking until the mixture is thickened, about 3-5 minutes.
Stir in the shredded chicken, garlic powder, onion powder, salt, black pepper, and parsley, mixing until well combined.
In a mixing bowl, combine the biscuit mix and milk to form a dough.
Spoon the chicken mixture into a greased baking dish.
Drop spoonfuls of the biscuit dough over the chicken mixture.
Bake in the preheated oven for 25-30 minutes or until the biscuits are golden brown.
Let cool for a few minutes before serving.