Preheat the oven to 450 degrees F. Line a baking sheet with aluminum foil and spray it with non-stick cooking spray.
In a large bowl, using your hands mix together the pork, egg, green onions, soy sauce, sesame oil, ground ginger, and a few grinds of salt and pepper until combined. Roll into meatballs that are about the size of golf-balls. Place onto the baking sheet in a single layer. Place into the oven and bake for 15 minutes or until fully cooked (the internal temperature has reached 160 degrees F.).
In the meantime, bring a large pot of water to a boil. Cook the rice noodles according to package directions. Drain and rinse the noodles with cold water and drain again.
While the pasta is cooking in a medium bowl whisk together chicken broth, soy sauce, rice wine vinegar, sesame oil, chili garlic sauce, sugar and hoisin sauce. Return the noodles to the pot and pour the sauce over the noodles. Toss to coat.
Serve the meatballs on top of the pasta on individual plates. Top with sliced green onions.