Preheat oven to 400°F (200°C) and prepare a baking sheet with parchment paper.
In a large bowl, combine ground pork, panko breadcrumbs, pineapple, green onions, garlic, salt, and pepper. Mix until well combined.
Form the mixture into one-inch meatballs and place them on the baking sheet.
Bake for 20-25 minutes until golden brown and cooked through.
While baking, whisk together soy sauce, brown sugar, and rice vinegar in a small saucepan over medium heat until slightly thickened.
Drizzle the glaze over baked meatballs and toss gently before serving.
