Place prepared shrimp in a large mixing bowl. Add garlic, old bay seasoning, ground black pepper, and wine. Toss to mix well. Set aside.
Chop serrano pepper and sweet mini pepper.
Melt butter in a microwave, then add bread crumb into the butter, followed by sliced peppers. Season with salt, brown sugar and freshly ground black pepper. Mix well.
In a large baking dish, arrange shrimp in a single layer. Place the bread crumb mixture on top of the shrimp, making sure the shrimp is covered.
Bake for 7 minutes, then set the oven to broil. Broil on high for 2-3 minutes or until the shrimp turns pink and the bread crumbs are slightly brown and crispy.