"If anything, you tend to increase staff because you get more customers through the door."
Mr Creedy said self-service enhanced customers' in-store experience because it allowed people to spend more time considering what food items they wanted to buy.
"They can browse instead of being at a counter face-to-face with somebody who's looking at them saying, 'What would you like?"'
Mr Creedy said KFC customers would still have the option of ordering their meals from a staff member.
The introduction of self-service terminals is part of "Project Fusion" - the next phase of KFC's store transformation programme.
It began in 2004 and has refurbished two-thirds of the chain's 88-store network in New Zealand.
The Warehouse revealed in May that it was scrapping self-service checkouts, which chief executive Mark Powell said worked well in supermarkets but were less compatible with general merchandise.
The big box retailer introduced the technology about three years ago, installing it in six sites, including the Albany Mega Centre and Auckland's Westfield Downtown shopping centre.
Air New Zealand has been offering passengers the option of checking in via self-service kiosks for a number of years.