In a medium nonstick pan over medium-high heat, heat 2 teapoons vegetable oil. Add the white part of green onions, garlic, and ginger. Cook and stir until softened and fragrant, about 1 – 2 minutes. Transfer to a small bowl and let it cool to room temperature.
In a large bowl, using your hands, gently mix the ground pork and ground turkey until almost blended. Add panko, chili garlic sauce, Hoisin sauce and the cooled green onion and ginger mixture. Season with ½ teaspoon salt and pinch of ground black pepper. Gently combine everything together. Form the mixture into 14 – 16 meatballs and place on a large plate.
In a large skillet over medium-high heat, heat 1 tablespoon vegetable oil. Add the meatballs and cook until browned on all sides, about 6 – 7 minutes. Make sure to rotate them for even cooking. Transfer the meatballs to a large plate. Set aside.
In the same pan over medium-high heat, add 2 teaspoons vegetable oil. Add zucchinis and cook until lightly browned and slightly softened, about 4 minutes. Add ¼ cup hoisin sauce, ½ cup water and meatballs. Cook for about 5 minutes or until the sauce is thickened slightly and the meatballs are cooked through, stirring occasionally. If needed, season with salt and pepper. Transfer meatballs and zucchinis to servings plates. Top with the green part of green onions and sprinkle with sesame seeds. Serve hot with steamed rice.