Can I eat crickets from Petco?

You are asking whether you can eat those living crickets still living in that deplorable conditions with those dead ones, my answer is NO. Those crickets were fed with whatever dead stuff you fed them and they were dead. Those crickets, scorpions, etc you heard were eaten in some countries need to be literally primed first. That is those insects are first starved to cleanse out their digestive systems etc then they are washed and rinsed to get rid of debris and any toxic waste inside their bodies before they are cooked. These crickets are raised especially for human consumption '

I wouldn't eat them but I'm sure you can

Put them in the lizards pen and dont feed him until he eats the crickets, trust me he will not allow himself to starve.