Bring a large pot of salted water to a boil.
Once boiling, add the pasta and cook according to the package instructions or until al dente.
While the pasta is cooking, heat a large skillet over medium heat.
Add the freshly ground black pepper and toast it for about 1-2 minutes until it becomes fragrant. Be careful not to burn the pepper.
Reserve about 1 cup of pasta cooking water, then drain the pasta.
Transfer the drained pasta to the skillet with the toasted black pepper.
Toss the pasta to coat it with the pepper.
Add about 1/2 cup of the reserved pasta cooking water and gradually add the grated Pecorino Romano cheese, tossing continuously to create a creamy sauce. If needed, add more pasta water to achieve the desired consistency.
Continue tossing the pasta until the cheese has melted and coats the pasta evenly. The sauce should be creamy and well-emulsified.
Taste and adjust the seasoning, adding more black pepper or cheese if necessary.
Serve immediately, with an extra sprinkle of Pecorino Romano and black pepper on top if desired.