For all the deliberate rage-baiting that Kemi Badenoch and other present-day Tories engage in, the 'controversy' about sandwiches is entirely constructed by journalists. The Politico article that parent linked to even says as much:

"The Spectator asked the Tory leader — elected to the head of the U.K. opposition party in November — if she ever took a lunch break."

The Spectator are using their press privileges to ask party leaders about their personal lifestyle rather than asking about anything relevant to policy - and although the Spectator might be forgiven for that, it is indefensible for 'serious' newspapers such as the Guardian and the Telegraph to be giving this story front-page status.

There are lots of politicians for us to be embarrassed about, but perhaps even more journalists.