The company that owns KFC says the fact many of its outlets are in new buildings prevented it being harder hit by the earthquake in Canterbury on 4 September.
Restaurant Brands increased sales from stores open more than a year, by 3.9% for the period between May - September.
Restaurant Brands also owns the Starbucks Coffee and Pizza Hutt chains.
Chief executive Russel Creedy believes the business was fortunate in the quake.
Nine Pizza Hutt stores in Christchurch were closed for a day, but Mr Creedy says the quake on had the effect of boosting sales when they opened again.
Mr Creedy says the Starbucks stores were worse affected because of the cordoning off of central Christchurch after the earthquake.
All four stores in the city were closed, reopening within the week, but sales continue to be impacted.
Mr Creedy says the company would now be wary of renting premises in old buildings that may not be up to standard.