I would stick to crumbles,add some frozen corn and mealworms for protein,with some crumbles,and greens cut up...Theyll eat everything.Gain weight a little.
Dry food is mostly corn anyway,but heated up frozen corn tastes better.1/2 cup per 8-9 hens.Will flavor crumbles too.I have Welsummers, as well,also barred rock,and light Sussex.Most took laying break for molt in fall.They lay most of winter,more on then off.many beautiful eggs today,it was -15 lat night,actual temp.Coops heated to 55 though.dark,no lights,nightlight glow panel,
I don't regard any/ every food as treats.Thats uneducated.Zoos give similar diets to avians.Variety keeps them happy healthy.i also give oatmeal, peanuts chopped,chopped raisins,sunflower hearts,chopped greens,flaxseed,mealworms,cornmeal, everyday.Yogurt once week,cantaloupe,raspberries,daily .They eat crumbles I between meals. Breakfast is the big meal,they clean the plate,then go play in sandboxes ,because they feel good.Not fat,nor skinny.Mine are forever pets,and it's important that they live as long as possiblble.
They are healthy,happy,lay often.