Sauté the onion and the carrot in half the oil for about four minutes until soft.
To make the chicken burgers, place the chicken mince, onion, egg, tomato puree, breadcrumbs and herbs in a large bowl and mix together. Divide the mixture into 10 patties and, using your hands, shape into burgers.
Heat the remaining oil in the pan. Add the burgers (a few at a time) and fry for about four minutes on each side, until browned and cooked through.
Serve the burgers in rolls with tomato and lettuce or with potato wedges, dips and salad.
Top with thin slices of cheese and/or pineapple for extra flavour.