There are several great recipe threads here that use the IP packets and/or Walden Farms. Also, I got the hard cover IP recipe book and some of the flavor combos there are pretty nice.
I mostly roast or poach my chicken and freeze portions of it, to add to a big salad, or home made soup with my 2 cups of vegees. Use an immersion blender to make it smooth, then add the meat. You can really experiment with spices to make things interesting. I also used the IP soups and after dissolving them, added to the pureed vegees - more water than they call for, as I like it thinner and it makes a big bowl that is very satisfying.
Lettuce is free, so you may change your mind on that as time goes by!
Good luck!