Preheat oven to 375°F and lightly grease a 9x13 baking dish.
Mix together the crushed stuffing mix, Parmesan, dried parsley, garlic powder, salt, and pepper in a large bowl.
Pat chicken dry, then season all sides generously with salt & pepper.
Dip each piece of chicken in the melted butter (let excess drip off), then press firmly into the stuffing mixture to fully coat.
Arrange coated chicken in the baking dish in a single layer.
Using a microplane or fine grater, zest 2 tbsp of cold butter evenly over the top of the chicken. This helps it brown and crisp beautifully in the oven.
Bake 45–55 minutes, or until the internal temp reaches 165°F and the stuffing crust is golden and crispy.
Let rest 5 minutes before serving so the coating sets.