Access through https to a webapp on microk8s

I have installed a web app using the operator on microk8s. It serves on http by default, and the service type is NodePort.

I don’t want to change the configuration of the webserver of the app (which is Nginx).

Is this possible to access this webapp through https by updating the microk8s configuration? If yes, what is the easiest way on microk8s to setup https for this webapp?