Mix meatball ingredients together and roll into meatballs. Brown and cook over medium heat in large skillet until cooked through (Or you can roll them and bake them in the oven at 425 for 13-14 minutes).
In a small mixing bowl, mix cornstarch and brown sugar. Drain pineapple juice into brown sugar mixture with soy sauce, vinegar, and ketchup.
Add meatballs, peppers, and pineapple tidbits to crock pot and pour sauce over.
Cook on low for 2-4 hours or until sauce is thickened.