Try something like this
apiVersion: v1
kind: Service
metadata:
name: traefik-proxy
annotations:
service.beta.kubernetes.io/aws-load-balancer-ssl-cert: "arn:aws:acm:REGION:ACCOUNTID:certificate/CERT-ID"
service.beta.kubernetes.io/aws-load-balancer-backend-protocol: "http"
spec:
type: LoadBalancer
selector:
app: traefik-proxy
tier: proxy
ports:
- port: 443
targetPort: 80