I have a faverolles rooster with a faverolles hen who also has that problem. He also suffers from curling his neck under himself when he is resting or asleep, which makes a mess since his bedding is Sweet PDZ. He gets water all over his face and neck and then gets caked in the sandy material. I was using an electric dog waterer where he got his beard all wet. I went back to a plastic waterer for the time being, and I just empty it out each evening so it doesn’t freeze. The nipples might be something to look into.
What is your location and how low are the temps. Heat in the coop is not good for them, but I will add some when it gets below 10 F at night.