Setting the healthcheck-path at the Service level.

apiVersion: v1
kind: Service
metadata:
  namespace: color-app
  name: green-service
  labels:
    app: green-app
  annotations:
    alb.ingress.kubernetes.io/healthcheck-path: /green/index.html

https://aws.amazon.com/blogs/containers/how-to-expose-multiple-applications-on-amazon-eks-using-a-single-application-load-balancer/