Preheat your oven to 250°F and prepare a baking tray. Dry the wings on a paper towel until completely dry.
Place the wings in a large bowl and toss with the salt, pepper, and baking powder until well combined. Place on the baking tray.
Bake the chicken wings for 20 minutes. Turn the oven up to 400°F and bake for another 10 minutes until golden brown.
While the chicken wings are baking, make the barbecue sauce. Combine the ketchup, vinegar, smoked paprika, brown sugar, and oil in a saucepan over medium-high heat and bring to a boil. Turn down the heat and let the sauce reduce by half. Set aside.
Remove the wings from the oven and toss with the barbecue sauce until completely coated.
Serve the barbecue chicken wings garnished with chopped parsley.