How can I enable zoom on Android?

@David Lee's comment on top is correct: It seems more of a Nexus 7 thing than a Chrome problem. Google has had a lot of complaints regarding pinch-to-zoom wrt Nexus 7 and there is speculation that they are trying to work around Apple's pinch to zoom patent.

From what I know just using

<meta name="viewport" content="width=device-width, initial-scale=1">

should work.

I've looked at http://m.skyscanner.com/ as an example and it works on other devices with chrome and other browsers like Dolphin HD. And all that site has is the viewport code from above.

Chrome for Android has a way for us to force zoom - Open up the browser's main settings and tap "Accessibility," then check the option called Force enable zoom and see if this works in Nexus 7(I dont have that device so cant test it)

What version of Android? Android 2.2 doesn't support the viewport meta-tag, if your version is between 2.3.x and 4.x try this:

<meta name="viewport" content="initial-scale=1.0, width=device-width, user-scalable=yes" />

Hope this helps.

Although it is not a complete solution to your problem, but it can zoom a particular region.

Thierry B wrote a plugin that will do this and posted it on github repo

You can demo it here:

Just click on the part you want to zoom

Or for Viewport Zoom please refer to this tutorial