Greg Sewitz and Gabi Lewis are used to people laughing at them. Three years ago the two college roommates ordered two boxes of live crickets off the Internet, the sort you might feed your pet iguana. They promptly shoved the two shoebox-sized containers of insects into the freezer. Later, they ground the tiny frozen corpses in a blender and, using Lewis’ own recipe, made a batch of protein bars that replaced whey powder with cricket…