Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper.
In a large bowl, combine ground chicken, panko bread crumbs, Parmesan cheese, egg, minced garlic, salt, and pepper. Mix gently until just combined. Do not overmix.
Roll the mixture into 1-inch meatballs and place them on the prepared baking sheet.
Bake for 18-20 minutes, or until cooked through and lightly browned.
While the meatballs are baking, prepare the sauce. In a medium saucepan, combine crushed pineapple, soy sauce, brown sugar, honey, rice vinegar, and grated ginger. Bring to a simmer over medium heat.
In a small bowl, whisk together cornstarch and water until smooth. Pour this slurry into the simmering sauce, stirring constantly until the sauce thickens.
Once the meatballs are cooked, add them to the saucepan with the teriyaki sauce. Toss gently to coat.
Serve the meatballs immediately over rice or noodles, drizzled with extra sauce if desired. Garnish with sesame seeds and chopped green onions if desired.
Notes
These meatballs are also great for appetizers or as a topping for salads.