Hey Kevin.
Good to see another local chameleon owner! I live in Bellflower.
In the past, I drove to Compton and purchased crickets from Rainbow Mealworms. They have a website and their customer service is top notch. Not to mention they were featured on CA's Huell Howser's CA Gold program, as well as being present in the major reptile conventions.
Anyways, they seemed to have run out of the "black cricket" and now have some sort of brown cricket. The blacks never jumped and are quiet. They are good eaters and great to feed, if you do not free range your crickets. They can pack a nasty bite on a sleeping chameleon. I personally have a free range set up and have the feeders in a cup either way.
The last time I bought crickets from them, they gave me some type of brown cricks and they were quick to jump out of my feeder dish. So i recommend buying the "black crickets" if possible!
Also check out Blacksmith's Corner on Lakewood Blvd just south of Artesia Ave. Another is Tiki's on Alondra between Clark and Bellflower Blvd.
I tried raising my own but i was quick to realize just buying 60 at a time was more cost efficient.