In a medium bowl, combine teriyaki sauce, vegetable oil, garlic, ginger and red pepper flakes. Cut chicken into 1-inch cubes and add to the marinade. Cover and refrigerate for at least 30 minutes.
Bring a large pot of water to a boil. Cook the noodles according to package directions.
Heat a large skillet over medium heat. Add the chicken and marinade to the skillet and cook until chicken is cooked through, about 10 minutes.
Divide noodles among four bowls. Top with chicken and sauce from the skillet.