Preheat oven to 400ºF.
Rinse wings and drumettes and pat dry. Transfer to a large bowl and toss with vegetable oil, salt and pepper. Position wings on baking racks in a single layer ensuring that wings aren't touching.
Bake, rotating pan half-way through, until fully cooked, 45 to 50 minutes. Remove wings from oven and transfer to a large bowl.
Add the sesame oil and olive oil to a small saucepot over medium-low heat. Add the garlic and ginger and cook, stirring, for about 3 minutes until golden brown.
Add the red pepper flakes, orange marmalade and hoisin sauce, and cook, stirring occasionally, for 5 minutes.
Pour the orange sauce over the wings, tossing to thoroughly coat, and serve immediately.