Add all meatball ingredients to a large bowl and combine with your hands until the ingredients are well distributed in the ground pork. Use a cookie scoop to help form meatballs, rolling them in your hands to create smooth, round balls about 1 to 1.5" in diameter. Set the raw meatballs aside on a baking sheet.
Pre-heat air fryer to 400°F. After pre-heating, I like to add a parchment paper liner to my air fryer tray to make cleanup easy. Add meatballs to your air fryer tray in a single layer, being careful not to overcrowd. (Depending on the size of your air fryer, you may need to cook these in 2 batches.)
Air fry meatballs for 8-10 minutes or until cooked through. Once cooked, remove meatballs from air fryer tray with tongs, allowing excess juices to drip off for a moment before moving the meatballs to a bowl.
Whisk apricot preserves and gochujang until well blended, then pour over meatballs and toss until evenly coated. Top meatballs with sesame seeds and green onions before serving, if desired.