Blind Chickens and Pecking Order:
Blind chickens can not fall into a pecking order. If you are raising a blind chick it will be important that you keep it with only a few chicks and it is important to watch for isolation and aggressive behavior from those with sight.
Since a large part of a pecking order is established with visual cues that other chickens will react to a blind chicken can only react to vocal cues. Alpha hens will expect submission from other hens under them with first a look followed by vocal tones. A chicken that is submitting will not look at the alph and will keep head lower as to show submission. A blind chicken can not understand this or react properly in a volitile situation. A blind chicken may create a stand off and will not be able to defend itself when attached.
When selecting a partner for a sightless chicken it may be wise to select a chicken/hen that has bottom status in a flocks pecking order. Breeds may known to be docile like Cochins and Silkies may be a good partner. In any situation observation of behavior and a subtle introduction is key. Chickens being social animals need more than contact a human can provide so it is worth investing in a partner.
Rosters and sightless hens do not mix. I would not recommend any interaction. A blind chicken may be able to pick up on vocal cues like tid-bitting or announcing location of food by a roster but physical contact by a roster may be perceived as a predator attack.