Running a container in k8s with cert-manager to issue a Letsencrypt certificate. The security between the client and the container is alright, so I dont need to use any further TLS code between the client and the server container - right?

I need to set the curl -H "Host: in grpc-dart, but I can only do it via a secure connection in the grpc-dart code:

final channel = new ClientChannel('mydomain.com', // localhost
    port: 80,
    options: const ChannelOptions(
        credentials: const ChannelCredentials.secure(authority: "some header"))
        );

Is there anyway around this, as I would like to NOT use any more TLS than I already have with k8s and cert-manager?

Thanks