I'm not too sure why there are so many negative reviews here. I've always had a good experience at Hot Head.
The food is super tasty and a nice change of pace from Chipotle. If the debate is over which is better, I'd go for Hot Head. Chipotle is good of course, but it kind of always tastes the same. Hot Head offers such a variety of sauces and a slightly wider selection of toppings, it's nice that I can try different things. I especially like how there are so many ways to spice up your burrito or bowl.
Definitely check out the Facebook fan page before you go - they have different specials for $1 off or free chips, etc if you mention the Facebook post. Plus they have a "Free Stuff Card" that's handy if you're a frequent visitor - you accumulate stickers to eventually get free things.