Preheat oven to 400°F (200°C) and line a rimmed baking sheet with parchment paper.
In a large mixing bowl, combine ground chicken, panko, egg, 2 tablespoons soy sauce, ginger, garlic, scallions, sesame oil, and black pepper.
Gently mix until just combined, being careful not to overwork the meat.
Shape the mixture into 1-inch spheres and arrange them evenly on the prepared baking sheet.
Bake for 15 to 18 minutes, or until the internal temperature reaches 165°F (74°C).
While meatballs bake, combine the glaze ingredients in a small saucepan over medium heat.
Simmer the glaze for 3 to 5 minutes until it thickens to a syrupy consistency.
Remove meatballs from the oven and transfer to a bowl.
Toss the baked meatballs in the warm glaze until evenly coated and serve immediately.