It sounds like the dog needs some training - and not just for your chickens. She probably needs more exercise and they need to play games with her to challenge her in problem solving. If she has learned to destroy whatever is in her way to get to what she wants, then they may start having other problems with her.
Can you put the dog on leash and work with her around your chickens? work on getting her to ignore them as you walk past the coop and run. Start far away and gradually move closer as she gets better at ignoring them. Treats, her favorite toy, whatever will keep her attention off the birds if you need to. If she focuses on the birds - snap the leash, say "NO" and turn and walk away.
Can you put the dog on leash and work with her around your chickens? work on getting her to ignore them as you walk past the coop and run. Start far away and gradually move closer as she gets better at ignoring them. Treats, her favorite toy, whatever will keep her attention off the birds if you need to. If she focuses on the birds - snap the leash, say "NO" and turn and walk away.