Yes, I work at our local animal shelter & we use wood pellets for some of the cat litter boxes. That's where I got the idea.
Sometimes once they expand into sawdust, they'll try to eat it. But usually by then they've learned where the food is.
Those chicks were from April 2016, and I can't remember how many I had in that batch. I used the two small Sunbeam heating pads, but I generally I hatched out batches of 20-40 chicks.
The pellets are great! Around here they're in 40lb bags from the farm stores for $5.50-$6.50. Once they know what their food is, I like to wet a section down just enough to break the pellets down, because the chicks LOVE to dust bathe using the sawdust from the broken down pellets. Not talking making it soaking *wet* and causing sick chicks - think of scrunching up a straw wrapper and dropping water to make it grow. As it breaks down, the chicks do a good job scratching around which lets the material do its thing, keeping odor to a minimum, and it dries everything up.
Also does a great job when the chicks inevitably knock their water over- soaks it right up and contains the mess.