Queen Jennah is using a mesmer illusion to disguise her feet
Think about it. One thing would be walking in your room without any shoes. But she's in this reunion in Lion's Arch without them, in fact we don't have any account of her not being barefoot. We also know she's been speaking personally with people "between the Shiverpeaks and the Unending Ocean" and we have no reason to believe she was wearing shoes.
Jennah is ALWAYS barefoot no matter the place, meaning her feet should be damaged or full of callus, yet her model doesn't show it at all. Which means she's using an illusion to hide it.
That's pretty much it, thanks for reading.