Bring a large pot of water to a boil; add noodles and cook until tender, about 2 minutes. Drain and rinse under cold water.
Meanwhile, heat oil in a medium skillet over medium-high. Add pork and cook, breaking up meat with the back of a spoon, until cooked through, about 6 minutes. In a small bowl, whisk together stock, chili sauce, soy sauce, honey, and ginger; add to pan; simmer until thickened slightly, about 1 minute. Add noodles and toss to combine. Serve with blanched bok choy and sprinkle with peanuts, scallions, and sesame seeds.