Preheat your oven to 375°Fahrenheit (190°C) and line a baking sheet with parchment paper.
Then mix the ground chicken, bread crumbs, egg, salt, pepper, and garlic powder in a large bowl.
Shape the mixture into 1-inch meatballs and place on the prepared baking sheet.
Bake for 20-25 minutes, or until the meatballs are cooked through.
While the meatballs are baking, combine the pineapple juice, teriyaki sauce, and brown sugar in a saucepan over medium heat.
In a separate bowl, dissolve the cornstarch in a little water, then add to the saucepan.
Cook the sauce and stir it frequently, until it thickens to a glaze.Stir in the pineapple chunks. Once the meatballs are done, toss them in the teriyaki pineapple glaze and serve warm.
