Heat the oven to 375°F. In a mixing bowl combine the beef, pork, ¼ cup teriyaki sauce, panko breadcrumbs, egg, onion, and garlic. Mix until evenly blended, then shape into a loaf and set on a baking sheet.
Bake the loaf for 45 minutes until it reaches an internal temperature of 160°F. While the meatloaf bakes, heat the oil in a large skillet over medium heat.
Add the cooked rice, pineapple chunks, frozen peas and carrots, and the remaining ¼ cup teriyaki sauce to the skillet. Stir-fry for 5 to 6 minutes until everything is hot and the rice starts to crisp in spots.
Remove the meatloaf from the oven and let it rest for 5 minutes. Slice and serve with the pineapple fried rice, scattered with the chopped green onions.