ENS Resolver Changed on its own?

How did this 0x4976fb03C32e5B8cfe2b6cCB31c09Ba78EBaBa41 become the resolver to my ENS?

Is that a public contract or something?

I'm confused because I never set a resolver and when I click on that address and go to opensea it looks like it's some dudes profile.

Should I be worried? Or am I missing something here..