Is it normal to eat some foods only in a certain way?

Examples. I eat all of the skin off of my chicken nuggets and put the bare nuggets in a pile and eat them last. I eat hamburgers by eating the edges to make a perfect smaller circle then repeat making smaller circles till its gone. I bite off the end of fries and squeeze out the inside eat that, then eat the rest. I eat all the pieces of salt off of pretzels and crackers before eating the actual thing, etc.