Preheat your oven to 400°F (200°C).

Rinse and pat dry the chicken wings to remove excess moisture.

In a large bowl, combine gochujang, soy sauce, honey, rice vinegar, sesame oil, garlic powder, and black pepper to create the marinade.

Add the wings to the bowl and toss them until well coated with the marinade.

Spread the wings in a single layer on a baking tray lined with parchment paper.

Bake the wings for about 40-45 minutes, flipping halfway through for even cooking.

While the wings are baking, prepare your garnishes: chop green onions and toast sesame seeds if desired.

Remove the wings from the oven when they are golden brown and crispy, and let them cool for a few minutes before serving.

Toss the wings in any remaining sauce from the bowl for extra flavor before serving, then garnish with sesame seeds and chopped green onions.