Is it normal to eat shrimp shells?
Depends.It depends
Yes, shrimp shells are edible, especially when they’re cooked until crisp. Plenty of people eat them, though others prefer to peel them because the texture can be tough or chewy.
Shrimp shells aren’t poisonous or automatically something you have to remove. When shrimp are fried or cooked until crisp, the shells can be crunchy and tasty; in some cuisines, eating them is common. Most people still peel shrimp in dishes where the shells stay chewy or get in the way.
So if you like the texture, go for it. Just be mindful of sharp edges or especially tough shells, which can be uncomfortable to chew or swallow.