I really like the ham and cheese sandwich, it's my go-to. I've also enjoyed the prosciutto sandwich (sorry i forget names) and croque madame. I enjoy Chabichou - its proximity, atmosphere, and its little patio in the summer. Just a heads up though, don't put you dirty dishes on the counter in front of the cashier, she said it's makes her a maniac! haha. I think they just prefer picking up dishes off the tables.
I have yet to try all the cheese and goods that they sell. There is quite the selection!