That doesn’t sound right. You need to leave food down for your chicks enough for all day. This is fresh food and fresh water. They won’t over eat. If you think they are taking in too much at one time you can always take the food up briefly and give them a little break but then put it back down. They shouldn’t normally overstuff themselves unless they have been starved or held too long away from food and that is just wrong. A baby chick should never be considered as needing to lose weight. I kept my babies in my house and left food down day and night with no problems. Mine would eat some during the night because I left a lamp on in the room they were setup in but they never overate.
Yeah, chickens will eat to get and maintain the weight they need to survive and thrive. They aren’t over indulgent with food normally. As long as it’s not ‘junk’ food! Lol