I agree! My day old babies are always cuddled with pine shavings! They love to kick them around and lay in them! Absolutely fine!I'm sorry, but I disagree. My chicks are on shavings from day one without any trouble. Chicks will explore things with their mouths, same as human babies do.
If they definitely know where their food is, I wouldn't worry about it. If you're going to worry anyhow, offer them some chick grit to digest any that they manage to swallow.