Raspberry has developed bumblefoot in both her feet. Bumblefoot is when the bottom of the foot becomes swelled and infected. A scab (bumble) will appear on the bottom of the pad of the foot. None of our other chickens have this issue, just Raspberry. She shows no signs of pain in her feet at all, she still jumps and runs, absolutely no limping or slowing down.
Her left foot was worse than her right, so we decided we'd better treat her, as we didn't want her going lame. We figured we'd start with the left foot, and when that one got better we'd treat her right foot.
We started by soaking her feet in warm water to clean them, then put antibiotic ointment on her left foot and wrapped it as shown in this video. Raspberry is very calm and it is relatively easy to wrap her foot. We did this for 3 days, re-wrapping it every day with a fresh bandage. During the day she ran outside with the other chickens with her bandaged foot.