Preheat the Oven: Set oven to 375°F (190°C) and line a baking dish.
Prepare the Chicken: Place chicken in a large bowl or shallow dish.
Mix the Marinade: Whisk soy sauce, sweetener, garlic, and ginger together in a small bowl.
Marinate: Pour marinade over chicken, cover, and refrigerate for at least 2 hours or overnight for deeper flavor.
Thicken the Sauce: Remove chicken. Stir xanthan gum into the remaining marinade until it turns into a thick glaze.
Bake to Perfection: Place chicken in baking dish, pour glaze over it, and bake for 1 hour. Flip halfway through for even caramelization.
Garnish and Serve: Top with sesame seeds and green onions. Serve hot.
