In a large mixing bowl, whisk together the pineapple juice, soy sauce, brown sugar, honey, minced garlic, grated ginger, sesame oil, and black pepper until the sugar has fully dissolved and all ingredients are well incorporated.
Add the chicken wings to the marinade, ensuring each wing is thoroughly coated. Cover the bowl with plastic wrap and refrigerate for a minimum of 1 hour, or overnight for enhanced flavor.
Preheat your oven to 400°F (200°C) and prepare a baking sheet by lining it with parchment paper.
Arrange the marinated chicken wings in a single layer on the prepared baking sheet. Bake in the oven for 30 minutes, flipping the wings halfway through for even crispness.
While the wings are baking, pour the remaining marinade into a medium saucepan. If you prefer a thicker glaze, combine the cornstarch with a tablespoon of cold water to create a slurry and add it to the marinade. Heat over medium heat, stirring occasionally, until it reaches a simmer and thickens slightly, about 5-7 minutes.
After the initial baking time, carefully remove the wings from the oven. Using a brush, generously apply half of the thickened glaze over the wings. Return the wings to the oven and bake for an additional 10-15 minutes, until crispy and caramelized.
Once baked, take the wings out of the oven and toss them in the remaining glaze to ensure they are fully coated. Transfer the glazed wings to a serving platter.
Sprinkle sesame seeds and chopped green onions over the wings just before serving.