In a chopper add chicken pieces, bread slices, garlic, green chilies, egg, soy sauce, black pepper powder, and salt. Grind to a fine mixture, remove in a bowl and refrigerate for 30 minutes.
Prepare batter by mixing together in a bowl, plain flour, cornflour, yogurt, salt, and enough water to make a smooth flowy batter.
Take a spoonful of chicken mince mixture in wet hands. Form into the desired shape and place on a large tray. Keep the nuggets in the freezer for 30 minutes or till they slightly harden.
Heat a saucepan with enough vegetable oil for deep frying.
Now dip each nugget into the batter using 2 forks, let the excess batter fall off and then roll the nuggets into the bread crumbs.
The oil should be on low to medium heat. Deep fry the nuggets on low flame for 5 minutes on each side.
Remove the nuggets and place them on absorbent paper or kitchen tissue.
Serve hot.