Cook the Chow Mein noodles according to package instructions, then drain and set aside.
Heat the vegetable oil in a large skillet or wok over medium-high heat.
Add the sliced carrots and stir-fry for 2 minutes.
Stir in the shredded cabbage and cook for another 2 minutes until slightly softened.
Add the bean sprouts and cook for 1 more minute.
Push vegetables to one side of the skillet and add the cooked noodles to the other side.
Pour the soy sauce, oyster sauce, and sesame oil over the noodles.
Sprinkle the garlic powder and mix everything together thoroughly.
Toss in the chopped green onions and stir-fry for an additional minute.
Serve hot and enjoy your homemade Panda Express Chow Mein!