Pat chicken wings dry with paper towels and separate into flats and drumettes if necessary for even cooking.
In a large bowl, whisk together soy sauce, honey, freshly grated ginger, minced garlic, sesame oil, ground black pepper, and red pepper flakes to make the marinade and glaze.
Add the chicken wings to the bowl and toss until evenly coated with the marinade. Cover and refrigerate for at least 30 minutes to let flavors penetrate.
Preheat oven to 400°F (200°C). Arrange wings in a single layer on a wire rack set over a rimmed baking sheet to catch drips.
Bake for 35-40 minutes, flipping halfway through, until cooked through and caramelized.
Brush wings with any remaining glaze from the marinade and sprinkle chopped green onions and toasted sesame seeds on top before serving.