Since Chitin is indigestible (insoluble fiber) I can't imagine it being harmful, as long as the shells are cooked enough to kill any potentially harmful thing the raw creature may have been carrying.
Chitin is the polysaccharide found in the cell walls of fungi and the exoskeletons of arthropods.
composed of chitin
Chitin
The cell walls of fungi are made up of the glucosamine polymer chitin. The chitin of the fungal cell walls contain nitrogen.
"chitin" comes from the French word "chitine", meaning the same substance, chitin.
chitin is an example of a carbohydrate
Chitin is polymerized N-acetylglucosamine.
Chitin makes the cell wall
chitin
Chitin does not contain polymers, but is, rather, a polymer itself. Chitin is a polysaccharide. So, it is a polymer of saccharide subunits. In this case, chitin has many N-acetyl-D-glucosamine subunits.
Chitin is a structural carbohydrate that forms their exoskeleton
Chitin is a structural carbohydrate that forms their exoskeleton