When I had kitties they couldn’t stand the scent of chives. But it being a kitchen garden, I’m sure you already have some planted there. Hmmmm...
I wonder if you could put some thorny rose branch clippings in amongst your plantings. Ouch for kitty when he steps in there, but he might avoid it from then on out.
Actually, I don’t have any chives in that particular spot, I guess I’ll just have to dig up a clump from else where!!!
Rose branch clippings is an idea, I don’t have roses, but I’m sure I can find some thorny branches around here somewhere.