Is it possible to have a custom domain with HTTPS?

Is there any way to do this (or something similar) but have HTTPS supported?

HTTPS is not supported with custom domains currently, as an alternative you may create a blank HTML page and upload it to your server, then embed the form using any of the embed methods: https://www.jotform.com/help/67-Which-Form-Embed-Code-Should-I-Use 

I hope this helps.