Chicks in most cases do not injure each other...Human emotions do not apply with baby animals....They all taste , peck, bite anything....Shiny things like eyes are fun...Sprinkle some feed on the floor of the brooder and add a piece of wood to peck...Make the brooder fun...
Some are just weaker and take more time to find their legs...Possibly all that is wrong?...Give it another day before you become too concerned...
Best wishes....