Mine are like that too... 3 months old now (and love playing around me as I work in the coop, but still not touch friendly), and 1 month old (handled daily, treat in hand, same thing) and my littlest onesie hatch LOVES people. will run to you when you walk by the brooder, run into your hand if you put it in. Don't know why the difference. There just is.
Yeah, even with food/treats with mine, they couldn't care less for me lol