I used to have a really healthy diet before the fissure! Then I took amitryptiline for my neck problem and put on 3 stone, which increased when I lost my mobility after the neck surgery!
That's why I tried low carb, it gives very quick results. I'm on The Metabolism Miracle diet, which has been miraculous, but not very fissure friendly as its not much fibre.
I eat walnuts, peanuts, almonds and hazelnuts. I don't think I do chew them particularly well, but they seem to be ok. I'll probably have problems with them now, after saying that!