I personally would not encourage this practice. They should be eating their feed from a clean feeder.
Feed left in wet puddles, in hot weather, produces mold where I live. Mold produces aspergillis and other bad things in chickens. It also encourages coccidiosis as the birds eat droppings with the feed or prompts internal parasites, like worms.
Worm load will definitely reduce egg laying. So you should check for messy vents from loose stools and any runny diarrhea.
You may get better feed consumption if it is in clean feeders and prevent sanitation illnesses.
LofMc