Heat frypan & add oil. Put bread into toaster and toast well. Crack egg into frypan & fry.
As the toast & egg cook, tear up lettuce leaves and put into bottom of serving container.
Once egg & toast are cooked place into the freezer for 5 minutes while preparing the rest.
Chop up leftover chicken & ham and add to container.
Chop up egg, once cooled and add to container.
Chop up toast & add most to container, leave a bit to sprinkle on top.
Add mayonnaise & perinaise (if using) to the salad & stir to combine). Add rest of toast croutons.
Put lid on container & add to lunchbox.