Cut the chicken up into pieces a little bit bigger than bite size.
Put a skillet on at medium high and swirl in enough olive oil to cover the bottom.
In a bowl big enough to handle the chicken, mix together the egg, the cornstarch, the salt and pepper.
Put the chicken in the bowl and stir it up getting it covered with the egg mixture. Then put it all in the skillet. Be sure to add all of the egg mixture.
Stir it it right away and toss or stir it a few times as it cooks. 7-9 minutes.