Preheat the oven to 375°F (190°C). Gather your baking dish and mixing bowls.

In a large mixing bowl, combine cooked chicken, frozen mixed vegetables, cream of chicken soup, garlic powder, onion powder, salt, pepper, and chicken broth. Stir well.

Pour the filling into a casserole or pie dish, spreading it evenly across the bottom.

In another mixing bowl, whisk together the flour, baking powder, and salt. Cut in the cold, cubed butter until the mixture resembles coarse crumbs. Fold in the shredded cheddar cheese.

Gradually add the milk to the mixture, stirring until just combined. Avoid overmixing.

Drop dollops of the biscuit dough evenly over the filling.

Bake assembled pot pie in preheated oven for about 30 minutes or until the topping is golden brown.

Allow the pot pie to cool for a few minutes before serving.