Start by boiling the chow mein noodles as per the package directions. Once cooked, drain them well and set them aside. Tossing them in a little oil can help prevent sticking. This step ensures your noodles are ready to soak up all the flavor later.
Heat oil in a large skillet or wok over medium-high heat. Add the cubed chicken pieces and cook until golden brown on the outside and no longer pink in the center. Stir occasionally to cook them evenly. This step should take about 4–6 minutes depending on your stove.
Now, toss in the carrots and cabbage. Stir-fry them for 2–3 minutes until they begin to soften but still retain some crunch. This balance of texture is what makes chow mein so satisfying. Don’t overcook—you're not aiming for mushy veggies.
Add minced garlic to the pan and sauté for another 30 seconds until fragrant. Then, gently mix in the cooked noodles. Stir well so everything is evenly combined and coated in flavor. Keep your heat on medium-high for a nice stir-fry effect.
Whisk together soy sauce, oyster sauce, sesame oil, and red pepper flakes in a bowl. Pour this mixture over the noodles and toss thoroughly until everything is evenly coated and glistening. Cook for another 2–3 minutes to let the flavors come together.
Turn off the heat and sprinkle chopped green onions on top. Give everything one final toss and serve your Chicken Chow Mein hot. It's best enjoyed fresh from the pan while still steamy and aromatic.