Preheat the oven to 425°F and line a baking sheet with parchment paper.
Place the wings in a large mixing bowl and pat dry with paper towels to remove excess moisture.
Sprinkle the baking powder and salt over the wings and toss thoroughly so each wing is evenly coated.
Arrange the wings in a single layer on the prepared baking sheet, leaving space between pieces for even browning.
Bake for 40 to 45 minutes, turning once if desired, until the wings are golden brown and crisp.
While the wings bake, combine the melted butter and lemon pepper seasoning in a small bowl.
When the wings are done, brush or drizzle the lemon pepper butter over them and toss to coat evenly.
Garnish as desired with lemon wedges and parsley, then serve immediately.