Using your theory I could also make the following logical arguement for another practice looked down on:
If feeding is good and the girl grows fast then she should lay more eggs due to a plentiful food source. If food is hard to come by then smaller clutches.
With that said maybe power feeding a snake is the way to make it have larger clutches or at least feeding more often than we do!
(The above statement in no way reflects my own opinion. It is simply being used as a supporter for an arguement.)