Cook the rice noodles according to package instructions. Drain and set aside.
In a large skillet or wok, heat the vegetable oil over medium-high heat. Add the shrimp and cook until they turn pink, about 3-4 minutes. Remove the shrimp from the skillet and set aside.
In the same skillet, add the red bell pepper, snap peas, green onions, garlic, and ginger. Stir-fry for about 3-5 minutes until the vegetables are tender-crisp.
In a small bowl, mix together the soy sauce, hoisin sauce, rice vinegar, and chili paste. Pour this sauce over the vegetables in the skillet.
Add the cooked noodles and shrimp back into the skillet. Toss everything together until well combined and heated through. Season with salt and pepper to taste.
Serve hot, topped with roasted peanuts and sesame seeds if desired.