KFC is still grappling with the closure of 600 stores after a new delivery contract with DHL sparked chicken shortages across the country.
The company released an updated list of 296 outlets that were still open as of Monday afternoon - though KFC said earlier in the day that many were offering limited menus or had cut their hours.
It means that about two thirds of its near 900 stores were suffering from the shortage.
KFC gave no indication of when operations would be back to normal but encouraged diners to check its website in order to find the nearest open restaurant.
"We're updating this as regularly as we can, and our teams are working around the cluck to get the rest back up and running as soon as possible", KFC UK & Ireland said in its latest tweet.
The closures were the result of delayed chicken deliveries by DHL, which announced in November that it had been appointed alongside QSL to manage the supply and distribution of food products and packaging for more than 850 KFC restaurants throughout the UK.
"Due to operational issues a number of deliveries in recent days have been incomplete or delayed," DHL said in a statement.
"We are working with KFC and our partners to rectify the situation as a priority and apologise for any inconvenience this may have caused."
KFC was previously a client of Bidvest Logistics.
The chicken chain detailed the problems in an earlier statement, which said: "We've brought a new delivery partner onboard, but they've had a couple of teething problems - getting fresh chicken out to 900 restaurants across the country is pretty complex!"
"We won't compromise on quality, so no deliveries has meant some of our restaurants are closed and others are operating a limited menu, or shortened hours," the company added.
"We know that this might have inconvenienced some of you over the last few days, and disappointed you when you wanted your fried chicken fix - we're really sorry about that."