How can I paint over chalk paint with regular paint?

you might have to use Block Out first-check with your paint store

I don't think you can paint over it with the wax on it.

I would try to remove the wax first ... it provides a barrier ... sure are a LOT of people that use it and then aren't happy with the results ...

https://www.hometalk.com/diy/clean/furniture/q-annie-sloan-wax-removal-please-help-15308409 but this may be of help!

Not sure

if you are using Annie Sloan you can generally paint over the dark wax with Annie Sloan. I have done this several times. Also your clear wax will remove your dark wax. If you rub clear over the dark is will start to come off. :)

You can after you remove the wax. Use some mineral spirits and some steel wool to try to dissolve most of the wax, I would also recommend some sanding THEN apply paint of your choice!