In a small bowl, whisk together the soy sauce, oyster sauce, brown sugar, and sesame oil. Pour this mixture into the skillet with the garlic and stir to combine.
Add the cooked noodles to the skillet and toss well to coat them in the sauce. Cook for an additional 2-3 minutes, stirring occasionally, until heated through. Remove from heat and set aside.
In another skillet, season the chicken thighs with salt and pepper. Cook over medium-high heat for about 5-7 minutes on each side, or until fully cooked and golden brown.
Once cooked, remove the chicken from the skillet and let it rest for a few minutes. Slice the chicken into strips and drizzle with teriyaki sauce.
Serve the garlic noodles topped with sliced teriyaki chicken and garnish with sliced green onions.
Notes
For a vegetarian option, substitute the chicken with tofu or your favorite vegetables.
You can also add a splash of lime juice for a zesty twist.
If you prefer a spicier dish, add more red pepper flakes or a drizzle of sriracha before serving.