Anybody can use FLTS--vegetarians, vegans, meat eaters--whatever. Leigh doesn't require specific foods in FLTS; rather she tells you which macros to cover. Does that make sense? This topic has been discussed here before, so you might do a search in this forum (or just read through a couple of pages of threads) to see what was said. I believe that Aoife is vegetarian (or vegan--I can't remember, but I'm pretty sure she has a modified diet in some form), and she's used Leigh's products. Leigh does offer some meal suggestions in FLTS, but there's no reason you can't modify the suggestions as long as you're following the macros.
And no, Leigh won't tell you that you have to eat chicken at every meal.
I'd definitely check out her books. You'll learn a lot! Annette is right, too; if you have any questions, just shoot Leigh an email or a PM to make sure that she sees it, and I'm sure she'll do her best to answer it as soon as possible. (Though she's not always around on the weekends, so if you do that today, keep that in mind.
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