We also have a couple of lurchers who know to not chase the chooks at my aunts. (but love 'buzzing' pheasants!)
Do you have any friends with chooks who are used to dogs?- and thus will ignore them while your dog gets used to them? As once she knows to ignore chooks its easier for the chooks to know she is a safe 'wolf' to have around!
I would suggest to start of with the chooks in their new run and dog on lead, walk quietly past the chooks, aiming for her to concentrate on you not them, as she gets better at ignoring them approach them quietly and let her sniff them, if she gets too excited/lunges at them, tell her off and walk away.
Keep quietly walking closer to them until she is happy to wander past and ignore them. What you want to aim for is her ignoring them! A quiet sniff is fine, but not excited lunging bouncing and barking!- if she does leap for them a quick NO, and walk away, as with any animal training its vital to stay calm yourself as wound up person=wound up pet= chaos!
Once you are happy she thinks they are boring (this may take a couple of days) gradually let her interact with them more, starting on a longer lead, but be prepared to restrain her if she gets excited!
You may need to be vigilant at first, and try to avoid situations where she accidentally chases them (eg ball thrown in wrong direction!)
Most dogs will soon work out who are members of the family, and ignore them!
And over time once you trust her, and the chooks know she is safe you can start to let them be out together.
Sadly some dogs are never safe around stock, but 99.9% can be if introduced in a quiet way!
Our old saluki was 100% with our cats and all stock ( he was 8 when we got him), unless they were about 150 yards away, at which point he would dash off towards anything that moved - if you yelled he would stop and look embarrassed (the worst day was when he hurtled off and then realised it was a 7 year old kid he had spotted- one VERY embarrassed dog!)
Good luck!- and if she is food motivated use it as a good distraction technique!