If the chicken is fairly small, you may simply split it in half.

要是鸡不太大，你把它分成两半就行。

《柯林斯英汉双解大词典》

You can fold it in half just like closing a book.

你可以像合书一样把它对折。

youdao

Talking to your parents about your problems is like cutting it in half.

和你的父母谈论你的问题就像把它切成两半。

youdao

President Obama says he plans to slash it in half by 2014 through a combination of tax increases on wealthy Americans, and cuts in domestic programs.

VOA: standard.2010.02.01

I'm dividing it in half and half, and half and half, but each time I do that there's this merging process.

我将其划分为一半又一半，每次我还要做的就是合并的过程。

哈佛公开课 - 计算机科学课程节选

If your cell phone goes off during an exam, I come up there. I grab your paper, I tear it in half, and I give you a zero.

如果你的手机在考试时响起的话，我会上前，将你的卷子拿过来，撕成两半，给你零分。

麻省理工公开课 - 固态化学导论课程节选

Or it could be because some restaurants cut a slit down the top, nearly slicing it in half.

BBC: The mysterious sausage that even presidents can��t resist

Obama has said he hopes to cut it in half by the end of his first term.

CNN: Rumors influencing health care debate

The factory has done it in half that time and is about to start the next huge batch.

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