if you want to eat it by all means go ahead, I would add some salt though ha
But in all seriousness, Yeah I am sure it is but I would not feed it until you quarantinea it for a few days and gut load it just to have it release what it ate previously incase it was eating some stuff that could be toxic to your chameleon.
Perfectly safe form of hopper to feed off. I only hold mine overnight and gutload then to be safe. If they had been subjected to any poisons it would kill them within that time frame.