Place two resealable 2-gallon plastic bags inside one another to protect against leaks, then set aside.
Pat the chicken wingettes and drumettes dry with paper towels and season lightly with 1/2 teaspoon kosher salt and 1/4 teaspoon freshly ground black pepper.
In the inner bag or a bowl, combine minced garlic, maple syrup, soy sauce, ginger paste, and crushed red pepper; pour in the mixture and add the chicken.
Seal the inner bag, squeeze out excess air, then seal the outer bag around it and turn several times to coat all pieces with the marinade.
Refrigerate the chicken for at least 1 hour or up to overnight to marinate.
When ready to cook, preheat the oven to 425°F and line a medium baking dish with parchment or spray with nonstick cooking spray.
Arrange the wings in a single layer with a little space between pieces and pour any excess marinade over them.
Bake for 20 minutes, then flip each piece and brush with pan drippings to coat.
Sprinkle with toasted sesame seeds and continue baking another 10–15 minutes, until the sauce is thickened and caramelized and the wings are cooked through (total bake time about 30–35 minutes).
Remove from the oven, let cool slightly, garnish with sliced scallions or green onions, and serve.