Here's one way to do it:

• Install AWS Load Balancer Controller
• Create an K8s ingress to create an application load balancer (ALB) or a K8s service to create a network load balancer (NLB)
• Create certificate using AWS Certificate Manager

Examples

This ingress creates an ALB with port 443 (HTTPS)
The certificate is added via annotation alb.ingress.kubernetes.io/certificate-arn

At a very high level, traffic flow would be:
(client) -> HTTPS/443 -> (ALB) -> traffic decrypted by ALB & forwarded to service -> (POD)

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: app-ingress
  annotations:
    alb.ingress.kubernetes.io/scheme: internet-facing
    alb.ingress.kubernetes.io/target-type: ip
    alb.ingress.kubernetes.io/subnets: subnet-x, subnet-x
    alb.ingress.kubernetes.io/listen-ports: '[{"HTTPS": 443}]'
    alb.ingress.kubernetes.io/certificate-arn: arn:aws:acm:REGION:x:certificate/xxx
spec:
  ingressClassName: alb
  rules:
    - http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: service-name-here
                port:
                  number: 80