I try and avoid fatty food but for a different reason - I.e. oily skin leading to acne.....
I've found that taking a bowl, half filling it with a mixture of soya protein, cous-cous, salt, spices, herbs, garlic and pepper, and then poring boiling water on top of this, makes for a very very tasty snack, and because it's 25% protein, it really fills you up. According to the nutritional info on the sides of the various packets, this meal has "trace or <.1 grams" of fat in any form in it.
Of course if you really want some flavour, add a stock cube or somthing, but i'm happy with soya sauce instead.