That depends on the context. People don't ordinarily order "a chicken" in a restaurant. But one can order "a chicken" in a butcher shop or grocery store.

Interested in Language
Hello, everybody!
1) Can I have a chicken?
2) Can I have chicken?
In one of the tests I've taken, it says that N1 is incorrect and N2 is correct.
Please, do explain why, because I don't seem to find any explanation in (on?) the Internet.
Many thanks.
Last edited by Iryn_; 06-Feb-2016 at 22:01.
That depends on the context. People don't ordinarily order "a chicken" in a restaurant. But one can order "a chicken" in a butcher shop or grocery store.
Pope of the Dictionary.com Forum
there's no context, unfortunately, - only a separate sentence.
So does it mean that with article "a" we're ordering a whole chicken, and without article - just a piece of it?
If there is no context, we cannot be sure of anything. Where did you find this context-free sentence?
That was a sentence from the exam worksheet.
My neighbors might look at me strangely if I asked "Can I have a chicken?" But then they'd ask, "Which one do you want?" (They raise chickens.)
I am not a teacher.
...or they might ask 'running around or oven-ready?'
It's not a good exam question because there are contexts when you could use the first answer.