Preheat your oven to 425 degrees Line a baking sheet with nonstick foil or parchment paper and spray with nonstick cooking spray.
Pat your chicken thighs very dry with paper towels then place the baking powder in a large Ziplock bag. Add the chicken thighs, seal, and shake well to evenly coat the chicken with the baking powder. Side Note: DO NOT USE baking soda.
Simply season both sides of the chicken thighs with garlic powder, sea salt, and freshly cracked pepper, to taste. Place on the prepared baking sheet.
Place into the oven and bake for 35, minutes until the chicken has reached an internal temperature of 165 degrees.
Slather both sides of the chicken with barbecue sauce and return to the oven bake for another 5-7 minutes, or broil for 2-3 minutes, watching carefully so it doesn't burn.
Sprinkle with chopped parsley, if desired. Serve with additional barbecue sauce on the side and enjoy.