Toddler’s feet peeling after bath

If it's the first time this has happened I would just chalk it up to normal dry dead skin. Let it air out for the night/keep it dry (don't peel it despite any urges to do so) and make sure to use an unscented lotion or baby lotion on it in the morning.
Could also be small blisters that popped in which case lotion might not be the way to go. Did he do a lot more walking than usual?

He's growing ... very normal