Add baking powder to chicken, add about 2 tablespoons of water and let sit for about 10 minutes.
Rinse off baking powder and season chicken with salt, pepper, onion powder and garlic powder.
Fry over high heat in a wok for about 5 minutes stirring or tossing the pan to prevent burning. set aside.
In a large pot bring water to a boil. When water is boiling, add frozen udon and cook for about 50 seconds. Do not let go past 1 minute!
Drain and rinse under tap water. Set aside.
In a wok quickly fry the white bits of the spring onions, the garlic, and the carrots.
Add white radish, bell peppers, and mushrooms and continue to fry.
Mix all the sauces together.
Add the udon, stir and then add the sauce mix to the contents of the wok.
Stir until well combined and then add green parts of the spring onions.
Mix thoroughly and then take off the heat.
Serve hot.