Cajun style crawfish?

My friend throws a crawfish boil every year at this time and I was thinking of going today. He cooks them all Cajun style, but have potatoes, mushrooms, and corn on the cob thrown in.

I've tried looking it up but haven't found any definite research. Does anyone know if eating the crawfish alone will be too many carbs? The fat and protein seem too good to pass up, plus they're delicious.