the entire leaf turns dry and flaky, if that's what you mean, but the brown spot itself doesn't flake off.
i cut off the couple affected leaves at the stem with a sterilized razor to be safe.. hopefully that will stop any spread..
the humidity is, if anything, too low. i keep a bowl of water in there for humidity but i guess ill try taking it out for a while.
it makes me wonder though, why only a couple leaves had this problem, yet the rest of the plant seems to be flourishing..