Preheat the oven to 350° F. Prep a baking dish with nonstick spray.
Add shrimp, bread crumbs, parmesan cheese, thyme, and garlic powder to a bowl, stir with a spoon to mix. Add shrimp and mix again to fully coat them in this mixture.
Remove shrimp from bowl and place in baking dish, in a single layer. If there are any breadcrumbs left over, you can sprinkle some on top. Pour melted butter on top of the shrimp.
Bake for 15 minutes or until crispy. If you want them browned on top, turn the broiler on for the last 2 minutes or until the tops of the shrimp is lightly browned. Serve immediately.