Add preamble to Chapter numbering in Jupyterbooks

[chipbrock]

I would like for the individual chapters in a Jupyterbook to have the preamble "Lesson" What naturally happens is

X My Title

where X is the autonumbered ordinal chapter number and "My Title" is put in by hand in the toc file

I'd like for it to be

Lesson X My Title

where somehow the ''Lesson" preamble happens naturally (as in Latex, where "Chapter" can be changed to "Lesson," for example with the right style file)

Is there a way to force this in Jupyterbooks?

thanks.