Cook the noodles according to the package directions. Drain and set aside. Pro tip: toss with a splash of oil to keep them from sticking.
Heat a large skillet or wok over medium-high heat and add the oil. Once hot, sear the chicken until nearly cooked through, about 3–4 minutes per side. Slice if needed and remove from the pan.
In the same pan, add a pinch more oil if needed. Sauté garlic and ginger for about 30 seconds until fragrant. Don’t burn them—smell is believing here.
Add the vegetables and cook 2–4 minutes until crisp-tender. We’re aiming for color, not mushy doom.
Return the chicken to the pan. Stir in soy sauce, oyster sauce, and hoisin (if using). Toss to coat everything evenly and heat through.
Fold in the cooked noodles and sesame oil. Toss well so every strand gets sauced. Cook for another 1–2 minutes until everything is hot and glossy.
Finish with green onions and a pinch of red pepper flakes. Taste and adjust salt if needed. Serve hot and enjoy the clang of your culinary victory.