Humans are not geared for digesting large amounts of chitin.
Not even going to replace beef and animal meats.
The Asians eat tons of bugs , ever been to a markets in Bangkok there is multiple dozens of species for sale ,everywhere ranging from tiny ants to huge water bugs on skewers grilled up. They also eat shrimp shell and head on the whole thing as do most Asian cultures by the kilo, they eat crabs like sea otters yup shell on and so does Andrew Zimmern watch that man eat shrimp or a crab. It’s false humans cannot eat chictin we have for thousands of years in large amounts. Some people might have a sensitivity a true biological sensitivity but that’s less than 1% of any given population. We as a species can eat shrimp,crab,lobster, insects you name it all shell on. Out stomachs have some of the highest HCL levels of any mammals this is indicative of a past carrion eating phase as all carrion eaters have this high HCL trait. So yeah humans where scavengers at some point in our half million year history. We get it you don’t want to eatzeeee bugs that’s fine but humans are fully capable of it , we have in our past largely existed on insects ,carrion and anything else we could get in our mouths and our teeth, stomach structures and digestive tract all show the evidence for this. It is only in the last 9000 years humans mastered agriculture first then animal husbandry that the diet shifted to mammal proteins. It’s largely a myth paleo humans hunted as the primary kcal source there is vast evidence that it was a rare windfall for paleo humans to get big game at all. 9000 years is a blink in the 500,000+ year history of H.Sapians let alone H.Sapian,Sapiens.