Preheat your oven to 400°F and line a 9x13-inch baking dish with parchment paper or lightly oil it. Pat your chicken pieces dry with paper towels to remove excess moisture.

In a bowl, whisk together honey, minced garlic, soy sauce, olive oil, apple cider vinegar, Dijon mustard, red pepper flakes, salt, black pepper, and ginger powder. The mixture should be smooth and fragrant with garlic throughout.

Arrange chicken pieces in your prepared baking dish in a single layer. Pour the honey garlic sauce over chicken, coating each piece thoroughly. Bake for 30 minutes uncovered, allowing the sauce to reduce and caramelize.

While the sticky honey chicken bakes, create a cornstarch slurry by mixing cornstarch with water in a small cup. Remove the baking dish from the oven and carefully drizzle this slurry over the glaze, stirring gently.

Return to oven for 5 more minutes to allow the sauce to thicken into a beautiful glaze coating each piece evenly. The internal temperature should reach 165°F for food safety.

Remove from oven and garnish with chopped green onions and sesame seeds while piping hot. Let rest 2 minutes before serving so the sauce sets slightly.