Istio ingress pod health check on 15443 (https://IP:15443/healthz/ready)

while ingress gw pod health can be monitored via http://internal_ip:15021/healthz/ready , the HTTPS is not supported that way.
More and more loadbalancers require a secured tunnel for that simple action.
why can’t I test https://IP:15443/healthz/ready ?
I do understand that port 15443 is reserved for mTLS between control plane and dataplane but is there any other option for secured health tests ? (without installing extra pods)