Ahh Parmo, we had such a short love affair between me finding your existence, and the Cambridge diet...
It's mainly fat though, cheese, chicken and then the breaded part is the main Carb so although high calorie, shouldn't have taken you out of ketosis.
But I do hope you enjoyed it! I keep thinking that there's no point in having a cheat if you don't enjoy it! I hope you're feeling better now and you're not feeling too guilty.
Are you sleeping okay? I find that when I'm not sleeping very well or I'm stressed out I crave carbs like nothing else, my body just wants them to keep me going, it could be causing the cravings.