Layer alternative font is tiny?

I did check and I have the overall interface set to 0%. I tried to increase it still a tiny font. I’ve only just spotted this. I’m not sure how long it’s been like that or if it’s a setting that’s changed on my rig.

Anyone got any advice on this? It’s really difficult to work. I’ve just downloaded 7.5 and it’s the same. Is it just me or is there something that’s happened recently?