It may have been the spices in the pepperoni. Coriander. I know I did not like cilantro when i was in the US. I did not know that coriander and cilantro are the same.

But my soapy problem seems to have gone away again. Will see if it comes back when i brush my teeth before bed.

Don't put pencils or pens in your mouth. Never know who has been handling them.