Insects as Food

While most people try to deter bugs from infecting their food supply,
it is often overlooked that arthropods are one of the most perfect food sources available. They take no effort to raise, they're chock full of protein, and they can be found at anywhere in the world at any given time.

Early Human Diet gives lots of information about the history of eating insects, and some insights into the edibility of different species, and SenseList provides a list of 32 insect foods you can buy online

I'd try it myself if I could get over how creepy the legs feel =/