In a gallon-size resealable bag, combine soy sauce, garlic salt, honey, and minced garlic; add sliced green onions if using and mix to combine.
Add the raw chicken thighs or drumsticks to the bag, seal, and toss to coat evenly with the marinade.
Refrigerate and marinate for at least a few hours (or up to 3 hours as indicated), turning occasionally.
Preheat the oven to 425°F (220°C). Grease a baking dish or line it with foil.
Place the marinated chicken in the prepared baking dish and pour any remaining marinade over the pieces.
Bake for 30 minutes, then turn each piece and baste with the pan juices or remaining marinade.
Return the chicken to the oven and bake an additional 10–15 minutes, until internal temperature reaches 165°F (74°C) and skin is caramelized.
Remove from oven, garnish with sesame seeds if desired, and serve warm over rice or noodles.