Preheat your oven to 425°F (200°C). Place a wire rack over a baking sheet lined with parchment paper. Grease the wire rack with cooking spray or oil. Set aside.
In a large bowl, whisk together 2 teaspoons baking powder, 1 teaspoon salt, ½ teaspoon black pepper, ½ teaspoon garlic powder, and ½ teaspoon paprika until evenly mixed.
Add 2 lbs of chicken wings to the bowl and toss until they are evenly coated with the seasoning mix. The baking powder helps create a crispy skin without needing gluten-containing flours.
Arrange the chicken wings in a single layer on the prepared rack over the baking sheet, leaving space between each wing.
Bake for 40-45 minutes, flipping halfway through, until the wings are golden brown, crispy, and reach an internal temperature of 165°F.
While the wings are baking, make the peanut butter sauce: In a small pot over medium heat, combine ¼ cup peanut butter, 2 tablespoons brown sugar, 1 tablespoon lemon juice, 2 tablespoons gluten-free tamari sauce, ¼ cup water, ½ teaspoon garlic powder, ½ teaspoon ground ginger, and ⅛ teaspoon cayenne pepper. Whisk together and cook for 3-4 minutes, stirring often, until the sauce is bubbling. Adjust thickness by adding more water, up to ½ cup total, if needed. Reduce heat to low until the wings are ready.
Once the wings are cooked, transfer them to a clean bowl. Pour ½ of the peanut butter sauce over the wings and toss until evenly coated. Reserve the other half of the sauce for serving.
Place the wings back on the baking rack and broil for 1-2 minutes until the edges are slightly charred and the sauce is sticky.
Plate the wings and garnish with ¼ cup chopped peanuts and fresh cilantro or parsley. Serve hot with the remaining peanut butter sauce for dipping.