Preheat the oven to 425°F. Line a sheet tray with parchment paper.
In a large bowl, mix together the pork, bread crumbs, egg, garlic, ginger, scallion, sesame oil, salt, and pepper until well combined. I like to use my hands for this.
Portion the meatballs into 1.5 tablespoons and roll them into a ball with your hands. Place on the prepared sheet tray, not touching.
Bake for 15 minutes until they are lightly golden on the tops.
Place the meatballs into the body of a 6-quart slow cooker.
Add the pineapple with the juice.
In a medium bowl, whisk together the sweet chili sauce, broth, hoisin, soy sauce, vinegar, and sesame oil.
Pour the sauce into the slow cooker and stir everything gently to combine.
Place over low heat for 6-8 hours or on high for 2-4 hours. Stir every so often so nothing burns on the sides.
Optional, if you would like a thickened sauce, during the last hour of cooking whisk together 2 tablespoons of cornstarch with 2 tablespoons of water. Pour into the slow cooker while stirring, place on high heat. Make sure to stir every 15 minutes. Serve as an appetizer or over rice as a main dish.