It's perfectly reasonable IMO for that to be called "farmless chickens".
Don't worry about them. Just keep doing your math in roman numbers. It's fine.
It bothers me that some people don't like my roman numbers. They work! Look!!
I + I = II
MMMCMXCIX - CXXIII = MMMDCCCLXXVI
There's absolutely no way of making this better through representation! Anyone who says otherwise is a bike shedder!
In fact, also don't worry about words either. Instead of serverless, let's call them catgiraffetablechaircthulhu. It doesn't matter!
It's perfectly reasonable IMO for that to be called "farmless chickens".