Place an oven rack 4 to 6 inches from the broiler; heat the broiler.
Pat the wings dry.
If the wings are not yet broken down into three pieces, cut each wing at the two joints; to do so, flip the wing over and wiggle each part to find the joint; cut at the joint hinge to separate the meaty drumette from the wingette (also known as the flat) and the wingette from the smaller wing tip.
In a large bowl, toss the baking powder with 1 tablespoon kosher salt.
Add the wings and toss until evenly coated.
Spread the wings in an even layer on a foil-lined baking sheet.
Broil the wings in the oven until golden and crisp all over; turning halfway through; about 15 minutes per side.
As wings cook, make the buffalo sauce.
While the wings are broiling, in a large bowl, stir together the hot sauce, butter, lemon juice and garlic; season to taste with salt and pepper.
Transfer the wings to the hot sauce-mixture and toss to coat.
Using a slotted spoon, return the wings to the baking sheet, leaving extra sauce behind.
Broil until sizzling and browned in spots, about 5 minutes.
Serve with extra buffalo sauce and the blue cheese dip.