In a large bowl, mix together the ground chicken, bread crumbs, minced garlic, sliced green onions, seasoned salt, black pepper, and ground ginger.
Use a large spoon or gloved hands to stir everything until it is fully combined.
Roll the chicken mixture into 1-inch meatballs and place them on a baking sheet lined with parchment paper.
Add the olive oil to a large skillet and heat over medium for about one minute.
Next, add the meatballs into the skillet in one single layer. Cook on each side for about 2-3 minutes, until the meatballs are cooked through and golden brown.
While the meatballs are cooking, make the teriyaki sauce in a separate bowl by combining the soy sauce, hoisin sauce, rice wine vinegar, sesame oil, grated ginger, grated garlic, and cornstarch.
Stir the sauce together until it is fully combined, and set it aside.
Remove the cooked meatballs from the skillet.
Pour the teriyaki sauce into the skillet and let it simmer for about one minute. Add the meatballs into the sauce, and toss them around until they are fully coated.
Remove them from the heat and sprinkle with sesame seeds and green onions if desired.
Serve over a bed of rice, and ENJOY!