Remove koay teow (flat cut rice noodles) from packaging and place on a microwave safe dish. Microwave on high for 5 minutes. Remove from microwave and loosened up noodles. Set aside.
Heat 2 tablespoons vegetable oil in a wok or large fry pan. Fry noodles until slightly crisp, about 4 to 5 minutes. Remove and divide noodles onto 4 plates. Set aside.
Add 1 tablespoon vegetable oil to the same wok or large fry pan. Stir fry sugar snap peas for 2 minutes. Remove and set aside. Then, add bean sprouts. Stir fry for 20 seconds. Remove and divide beans sprouts over each of the 4 plates of fried noodles.
Add remaining 2 tablespoons of vegetable oil to the wok or large fry pan. Sauté garlic for about 30 seconds. Add shrimps and ground pepper. Stir fry for 2 to 3 minutes. Add chicken stock and bring to a boil. Season with salt.
Add corn starch mixture. When stock comes back up to a boil, return sugar snap peas to the wok. Then stir in the beaten egg and immediately turn off stove.
Pour sauce over noodles.
Serve with pickled green chilies or cut red chilies in soy sauce.