Burger King pulled out of France several years ago. The refurbishing of Terminal 1 has grouped all of the restaurants in the basement. The last time I went through (April), there was a sandwich shop, a McDonalds and either a Hippo or a Bistro Romain. Out in the satellites, there are coffee stands that also sell pre-made sandwiches. All in all, not much choice for food. If you have time, you could take the shuttle bus to terminal 2 for more variety.