Answer:
I can be short and sometimes hot. When displayed, I rarely impress.
Two bodies have I, though both joined in one. The more still I stand, the quicker I run.
I walked and walked and at last I got it. I didn't want it. So I stopped and looked for it. When I found it, I threw it away.
What is put on a table, cut, but never eaten?
Take one out and scratch my head I am now black but once was red.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.