In a large bowl, combine the ground turkey, panko bread crumbs, chopped green onions, minced garlic, grated carrot, and egg. Season with salt and pepper.
In a separate bowl, whisk together the soy sauce, honey, sesame oil, and grated ginger until smooth.
Preheat your oven to 400°F (200°C).
Form the turkey mixture into 1-inch meatballs and place them on a baking sheet lined with parchment paper.
Drizzle half of the teriyaki sauce over the meatballs.
Bake in the preheated oven for 18-20 minutes, or until the meatballs are cooked through (internal temperature should reach 165°F or 74°C).
Once baked, transfer the meatballs to a saucepan, pour the remaining teriyaki sauce over them, and simmer on low heat for 2-3 minutes to coat.
Serve the meatballs garnished with sesame seeds and additional green onions if desired.