Bring a large pot of water to a boil. Add in the spaghetti and the kosher salt and toss to combine. Cook for the length of time suggested on the box, reserving 1 cup of pasta water.
1 pound spaghetti, 2 teaspoons kosher salt
While the pasta is cooking, heat a large skillet over medium-low heat. Add the olive oil, and then the black pepper, cooking until the pepper is fragrant, about 1 minute. Remove from the heat.
2 tablespoons olive oil, 1 teaspoon freshly ground black pepper
Use tongs to transfer the pasta from the pot to the skillet, and toss to combine. Add in half of the cheese, tossing it so it melts. Pour in 1/3 cup of the reserved pasta water, stirring so it is well distributed. Finally, add in the remaining cheese, and toss to combine. Add more pasta water if needed.
2 ounces Pecorino Romano cheese
Serve and top with more Pecorino Roman cheese and pepper.