Istio_requests_total not showing up for other envoy injected deployment

I deployed istio 1.5 along side with bookinfo sample. I used prometheus to query istio_requests_total metrics just fine. However, I added a nginx deployment inside the namespace that has envoy injected ready. The nginx deployment works just fine and I can hit it using a kubernetes service. But I do not see any kind of metrics for this destination_service_name=nginx

Can some one explain

To be clear: you are saying the new deployment came pre-packaged with an envoy? Is that envoy being configured in the same way?