you can get crickets online or at your local pet store (there are literally probably dozens if not a hundred online places to get cricks from) depending on size you will prob look at feeding 10-15 a day of small crickets, so if ordering online I wouldnt get more than like 250 and work around that (even that will prob be too much for the firs time til he gets a little bigger) so they don't outgrow your chameleon.