There are only around 8 or so eateries in this terminal – the options include pizzas, subs, made to order burgers and seafood. There's also a wine bar that serves Southern Californian style tapas.
If you have time to spare, pop over to the XpresSpa in Terminal 5 for a pre-flight relaxation treatment.
It takes about 10 minutes to get between the terminals using the passenger tunnels.