We do call them sea bugs, sure. Show me an insect per se with an edible white tissue the size of my palm and we'll talk about it.
Create an oxygen-rich atmosphere and you can engineer big-enough land insects.
See the carboniferous for more details.
Also note that if you’re allergic to shrimp or lobster, chances are pretty high that you’ll get a reaction from eating insects.
It was an advisory from last year’s cicadae boom in the US.