Cut the chicken breasts in half, lengthways, making 4 fillets.Place on a board, cover with a sheet of baking paper and bash with a rolling pin until they are the same thickness all over.
In a shallow bowl, add the flour and season with salt and pepper.In another bowl, add the egg (beat) and then in a third dish, add the breadcrumbs and parmesan.
Take each fillet and coat in flour, then dip in the beaten egg and finally the breadcrumb mixture. Place on a plate until you've done all four. Add the oil to a large frying pan on medium heat and cook each fillet for 3- 4 mins on each side until golden and crispy.Serve with lemon wedges on the side with a nice salad.