I first had this dish in Sicily with my ex wife who is Sicilian. Anyway, I tweaked it by adding fresh thinly sliced mushrooms and chopped turkey slices to the frying oil. It was lovely.
I would strongly advise the following: do not use dried substitutes for the main ingredients e.g. dried garlic powder, dried parsley,etc. It will taste awful.
Anyway, enjoy this classic italian or tweak it your own way. Try frying some thinly sliced beef or chicken with mushrooms, courgettes, aubergines, whatever you like. It's a very forgiving base.