Very normal. Reptiles don't shed their skin a few cells at a time like mammals but shed in sheets instead. A rapidly growing young chameleon will almost explode into shedding. Older animals tend to just shed in areas, like feet, head or tail each time.
The resource section of this site is full of helpful information. https://www.chameleonforums.com/care/
Here is the veiled chameleon care sheet.