I have tasted it in many different versions of itselfpizza, but my favourite is the classic one,: crunchy breadcrust, tomato sauce and some pepperoni.

The "bread" of a pizza is called the crust.

I also like to cookmake/bake it with pita bread when I'm on a diet, and I don't want to doeat the fulnormal dough,. It is also is really quick to domake and I really like the taste, as it is. It's like a thin pizza and it isn't that huge, is greatcrust and it's the right size for dinner meal.

This sentence was probably just too long, which made it difficult to understand grammatically. It's often better to try to more, shorter sentences, which is often what natives do anyway.

Favourite dish? Pizza!

I have tasted it in many different versions of itself, but my favourite is the classic one, with the crunchy bread, tomato sauce and some pepperoni.

I also like to cook it with pita bread when I'm on a diet, and I don't want to do the full dough,. It is also is really quick to do and I really like the taste, as it is a thin pizza and it isn't that huge,. This is great for dinner meal.

I am not sure whether you want to say "... don't want to do the make the full dough. " or "... don't want to do the eat the full dough."
You could try using words like 'moreover' instead of 'also', so the sentence could be "Moreover, it is really quick to do..." or "Moreover, it is really quick to make..."
You could say "... I enjoy the taste..." instead of " ... I really like the taste..."

What you have written makes sense, but I am suggesting some other options that could be useful for you.

Favourite dishOPTION A (in British English): My Favourite Dish? Pizza!¶
OPTION B (in American English): My Favorite Food? Pizza!

OPTION A: I have loved pizza ever since the first time I tried rying it!¶
OPTION B: I have loved pizza since my first bite!

I have tasted it in many different versions of itselfpizza versions, but my favourite/favorite is the classic one,: with a crunchy breadcrust, tomato sauce, and (some) pepperoni.

NOTE: The word "some" is optional.

I also like to cookhave it with pita bread when I'm on a diet, and I don't want to do the fulldieting. That cuts down on the amount of dough, and also is really quick to do and I really like the taste, as it is a thin pizza and it isn't that huge,make. I relish the taste. Thin-crust pizza and is less heavy, and is great for dinner meal.

NOTE: Break long sentences into shorter sentences.