Pre-heat the oven to 375°F.
Place a pot of water on to boil for spaghetti. When it comes to a boil, salt the water, add the pasta and cook to al dente. Heads up: reserve 1/2 cup of the starchy cooking water just before draining.
Place the pork in a mixing bowl. Add the egg to the bowl. Place the rice cereal in a food processor and pulse into a breadcrumb like consistency. Add the cereal crumbs to the bowl.
Add salt, pepper, the five-spice powder, 2 chopped scallions and 2 tablespoons soy sauce to the bowl. Mix the meat balls thoroughly. Form 1 1/2-inch balls and coat with 1 tablespoon oil; scatter onto a baking sheet and roast for 15 minutes.
When the meatballs are close to done and the pasta is in, heat a large skillet over high heat with enough vegetable oil to coat the bottom of the skillet, a couple of tablespoons. Add the snow peas, red pepper, remaining cut scallions, ginger and garlic. Stir fry for 2 minutes, then add the spinach and wilt, 1 minute. Add the remaining soy sauce, about 1/3 cup, and the sesame oil, then drain, add in the pasta cooking water and toss to combine so that the pasta can soak up the sauce, about 1 minute.
Garnish with sesame seeds and top with lots of meatballs.