In a small bowl, whisk together 3 tablespoons Old Bay Seasoning and baking powder until combined. Toss the chicken wings with the Old Bay mixture.
Grill the wings over medium heat of 5-6 minutes. Flip the wings over and cook for an additional 6-7 minutes or until done. Transfer to a platter or clean bowl.
Whisk the remaining Old Bay and butter together. Toss the cooked wings in the butter mixture and serve immediately.