In the original Danger at Dunwater, the lizardfolk tribe is led by a chieftain. In Ghosts of Saltmarsh, the chieftain has been changed to a Queen.
This is a little problematic, because the official lore is that all lizardfolk Kings/Queens are tainted by the demon Sess'innek, and tribes ruled by such an individual are more inclined toward evil and aggression. (That's why they speak Abyssal in addition to Draconic, for example.) Neutral-aligned lizardfolk tribes are ruled by shamans (and chieftains, I suppose, though the 5E Monster Manual doesn't say anything about that).
Considering the lizardfolk in Danger at Dunwater are supposed to be the good guys, it doesn't make sense for them to be ruled by a King/Queen, so I have changed Queen Othokent back to a chieftain. Now if the players roll high enough on their Nature check, they might be able to learn these lore details about lizardfolk, and the fact that the Dunwater tribe is ruled by a chieftain instead of a demonic King/Queen should make diplomacy more appealing.