If they are frozen, they will no longer have parasites to harm the snake, however there is the question of very possible insecticides that the anole's injest along with the insects the anole's consume, ESPECIALLY around city areas.
I have certainly fed many of my animals in the past Anole's as well, but in past years, I've concluded that it is much better to just stay with rodent's unless they will only accept anoles, and even then, see if they will take scented offerings instead.
In my opinion, they will probably grow more rapidly on mice as well, unless you give them MANY lizards on a very steady basis.
best regards, ~Doug
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"Better to be silent and thought a fool, than to open mouth and remove any doubt!"