Paper Rice specializes in build-your-own style spring rolls, a fast and contemporary take on a traditional Vietnamese dish. Owned by Jens Kristen, a Pasadena City College math and computer science professor, the restaurant offers a casual Chipotle style, walk up custom ordering experience where customers can also enjoy spring bowls or a bahn-mi sandwich. I had the pleasure of sampling some of the items on the menu, although the bowl and sandwich seemed appealing, the rolls are their staple and I wanted to see what …