Line a rimmed baking sheet with foil then set a wire rack inside and spray rack with cooking spray.
Dry chicken wings thoroughly with paper towels to remove as much moisture as possible.
Mix baking powder and 1 Tablespoon of lemon pepper seasoning in a large bowl or zip top plastic bag, then add chicken wings and toss to coat.
Place wings on the wire rack leaving about 1 inch of space in between each wing.
Bake the wings for 20 minutes then flip and bake for an additional 20 minutes.
Flip again and bake for about 5 more minutes until the wings are cooked through and skin is crispy and golden brown.
Melt the butter in a microwave safe dish. Add to a large bowl with the remaining lemon pepper seasoning and 1 tablespoon of lemon juice then stir to combine.
Add the wings to the bowl with the sauce and toss until thoroughly coated.
Notes
Note: use an aluminum free baking powder to avoid any metallic taste.