Hey there- I'm a loooong time PH lurker but couldn't resist an Austin question.
It's not exactly a restaurant, but Caveman Cuisine is a local business that will make you a nice paleo meal on demand or at regular intervals: https://www.cavemancuisine.com/
You might also want to join us at Austin Primal Living on meetup.com for more local knowledge and some real-life community: http://www.meetup.com/Austin-Primal-Living-Group/ (there's nearly 300 of us now!) Our potlucks aren't restaurants but they sure have paleo food.
I haven't been to Snap Kitchen since late 2010, when their paleo selections were existant albeit very expensive, but I've heard that they've since shifted their focus away from paleo. Can someone else from Austin confirm?
Oh, and fair disclosure: I am friends with the fantastic people behind Caveman Cuisine, and I'm an organizer of the meetup group. Yeah, this is totally self-promotional, but hey, you asked about Austin :) May the moderators have mercy- I love you all.
I just searched "paleo" in Yelp and found this restaurant:
Ooooh, I'm so glad you asked! I can't say I like Snap Kitchen, but take yo-self to any barbecue place, even the one at Whole Foods is I think delicious. Also, Austin is the most tolerant place to food weirdnesses EVER- I'm extremely strict even when eating out, and I've even had people guess that I'm paleo based on my order specifications, they're pretty hep to the food trends. Haddington's is quite good, I thought, and has lots of meat. Foreign and Domestic is good, as well, and the waiters are super-nice and accomodating.
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