Slice the chicken breast thinly.
Finely chop the onion and green onion.
Mix chicken breast, onion, green onion, and salt together in a bowl.
Beat the eggs in a separate bowl.
Shape the chicken mixture into bite-sized pieces.
Coat the shaped pieces with the beaten egg.
Heat cooking oil in a pan over medium-low heat.
Cook the egg-coated pieces in the pan until golden brown on both sides.