Thank you for sharing the information.
Changing the port from 80 to 443 won't fulfill your needs. We recommend setting up the Ingress controller add-on for your AKS cluster using an Application Gateway instance.
Please visit the links below for more information:
Application Gateway Ingress Controller (AGIC)-https://learn.microsoft.com/en-us/azure/application-gateway/ingress-controller-overview
Enable the ingress controller add-on for a new AKS cluster with a new application gateway instance-https://learn.microsoft.com/en-us/azure/application-gateway/tutorial-ingress-controller-add-on-new
Enable application gateway ingress controller add-on for an existing AKS cluster with an existing application gateway-https://learn.microsoft.com/en-us/azure/application-gateway/tutorial-ingress-controller-add-on-existing
If you have any further queries, do let us know.