My feed store has those feeders in red plastic now, maybe you could get one of those. They're not as sharp. I am going to throw my metal one away today, just because I see what happened to your sweet little chick.
Your chick looks very healthy in the picture, I'm sure it'll make it with you watching over it to keep away infection and maggots. Behavior is the number 1 thing I look for in how healthy an animal (or child) is. If it's eating, drinking, sleeping, pooping and interacting with other chicks it's ok. If it starts to mope around or starts laying around, stops eating or drinking, or if it was skittish before and now doesn't care if you pick it up, or its bright little eyes get dull, etc, then you have to start worrying about infection or illness. To me, yours looks fine in many ways.