The Birb King
Bird is the word
As someone who has had broody hens hatch chicks before, this behavior is normal. During the first few days they are not super broody, and some hens are more protective of their eggs than others. It is best not to disturb her for the first few days, then after that she will probably be more broody and you can give her eggs. I have 2 broody Serama hens sitting on eggs now.