A great oil finishing with a strong black pepper taste is fairly achievable if you know where to look.
Zingerman's Mail Order does a phenomenal job of sourcing olive oils like this but also of specifically calling out the tasting notes and the differences in their options.
Two that they have that specifically hit this spiciness you're looking for:
https://www.zingermans.com/Product/petraia-olive-oil/O-PET
https://www.zingermans.com/Product/la-spineta-olive-oil/O-SP...
But in my experience, their live chat or phone service is absolutely amazing at guiding you to a great option, too.