What’s the easiest way to do that?
I link to my real profile on my website. People who lose money on these scams rarely bother to check basic details like that. 
Discussion
this is why it should be #nostr standard to show the nip-05 and/or the last 5 characters of the npub on all posts
NIP 05
Needs well known hosts on your website.
Details are listed here: https://github.com/nostr-protocol/nips/blob/master/05.md
The self-hosted option is best, I think: https://nostr.how/en/guides/get-verified#self-hosted
If you are able to drop a JSON file somewhere your domain can serve, you're good.
Having your nostr profile linked from your personal site is a good runner up!
You need to host exactly the following JSON file at https://lynalden.com/.well-known/nostr.json
Then you can update your profile with the NIP-05 address "_@lynalden.com". The underscore is a reserved name to indicate that you are the domain owner, so it will simply show as "lynalden.com" in clients (as opposed to something redundant like "lyn@lynalden.com").
(eab0e756d32b80bcd464f3d844b8040303075a13eabc3599a762c9ac7ab91f4f is your public key in hexadecimal format)
Hey nostr:nprofile1qqsw4v882mfjhq9u63j08kzyhqzqxqc8tgf740p4nxnk9jdv02u37ncpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsj0xvsn This is the correct answer to your question.
While you're right, many people won't check a website before talking with you, this is a direct visual identifier while in th process of communicating with you. It definitely won't hurt.
If you need help setting up this up on your website with your web host, let me know.