Marinate chicken with salt, black pepper, red chilli, lemon juice, garlic ginger paste for 30 minutes. Whisk egg whites till soft peaks form. Heat oil in a deep frying pan. Add flour into the chicken and mix. Now coat each chicken piece one at a time, first in egg white and then into the potato/chapapati flakes. Fry each chicken piece till golden brown. Wrap each chicken piece in a chappati (roti), filling in with mayonnaise, tomato ketchup and lettuce.
