1. Bring a large pot of salted water to a boil. Add the noodles and cook according to package directions until al dente.

2. While the noodles are cooking, heat a large skillet over medium-high heat. Add the vegetable oil, then add the chicken and onion. Season with salt and pepper, and cook for 5-7 minutes or until the chicken is cooked through and the onions are translucent.

3. Drain the noodles and add them to the skillet along with soy sauce. Toss everything together until well combined.

4. Serve hot and enjoy!