Is there a way to view HTML files/sites on the Nexus 7/Android 4.2.2?
Once you transfer files to your Nexus 7 use one of these apps to get to the files:

Solid Explorer or ES File Explorer

explained here: 

http://forums.androidcentral.com/google-nexus-7-tablet-2012/201344-how-view-files.html

NEXT STEP:

To View on the html file on your Nexus 7 use the HTML Viewer app.

Would love a quicker solution, but this works!