Preheat your oven to 400°F (200°C). Line a large baking sheet with parchment paper or a silicone baking mat. Lightly spray with non-stick cooking spray to ensure the meatballs don’t stick.
In a large mixing bowl, combine the ground chicken, breadcrumbs, egg, minced garlic, ginger, sliced green onions, salt, and pepper. Use your hands or a spatula to mix until just combined. Do not overwork the meat, or the meatballs will become tough.
Scoop about one tablespoon of the mixture at a time and roll into small balls, roughly 1 inch in diameter. Place them on the prepared baking sheet. Bake for 15-18 minutes, or until the internal temperature reaches 165°F and they are slightly browned.
While the meatballs are in the oven, whisk together the honey, soy sauce, rice vinegar, sesame oil, and Sriracha in a small saucepan. Bring the mixture to a simmer over medium heat. Let it bubble for 3-5 minutes until it thickens into a glossy glaze.
Once the meatballs are finished baking, transfer them into the saucepan with the glaze. Gently toss them until every meatball is fully coated. Alternatively, place the meatballs in a bowl and pour the sauce over them. Garnish with sesame seeds and extra green onions.