Cut chicken breast into pieces that are approximately 1-2 inches.
Whisk together in a large bowl the potato starch, baking powder, salt, pepper, onion powder, garlic powder, eggs, water, and oil.
Soak the chicken breast pieces in the batter for about 3 minutes.
Heat oil in a frying pan on medium/low heat until oil is hot.
Pan fry the battered chicken pieces for 3-5 minutes on each side (until golden brown)
Remove the chicken nuggets from the pan and pat with a paper towel to remove excess oil