You're not the first to say that, but I don't know why. The site's fine on my Android phone and tablet. The markup/CSS is so simple it's hard to imagine any browser having trouble with it.
I've already spent enough time abusing the display model Android tablets at my local big box stores to test Improvely without buying a bunch of devices. I think if I go back again to try to live-fix my blog theme, they might kick me out. ;)
So in Chrome for Android the problem comes only when you zoom in by double-tapping. Your site is quite readable without zooming so it's mostly fine, but it does definitely break.