Lay out three plates or shallow dishes.
Place flour in one and season with garlic powder, salt, and pepper.
Crack eggs into the next and whisk them.
Place breadcrumbs and crushed cornflakes into the third and mix to combine.
Dredge each chicken slice into the flour, coating both sides, then dip into egg, and then coat fully in the breadcrumb mixture. Repeat with all chicken pieces.
Heat about 2 inches of oil in a fry pan and when hot, add breaded chicken. Do two batches if need be.
Fry until golden, 2-3 minutes, flip and fry the second side. Remove to a paper towel. Repeat with remaining chicken.