That's so weird. My new hens won't eat scraps either. I got them about 6 weeks ago and they just look at fruit and vegie scraps and go nu-uh. So annoying. They only eat bugs (all types), grain, bread and kikuya grass. Never, ever had chooks that won't eat scraps. I guess the breeder never fed scraps to them. I keep putting scraps out anyway, in the hope they will either eat them eventually or they'll attract more grubs and bugs for the girls to eat.
If anyone has been able to solve this issue PLEASE tell us how. Thanks