Add 1 tablespoon salt to pot of boiling water.
Add pasta to water and cook until al dente (about 9-10 minutes).
When pasta is finished, strain through colander and add back to pot. Drizzle some olive oil over pasta and stir so the pasta doesn't stick to itself.
While pasta is cooking, warm skillet over medium heat and add 3 tablespoons olive oil, garlic, chili/pepper, and anchovies.
Sauté above for a few minutes until ingredients begin to soften (about 3-4 minutes).
Add olives, capers, and tomatoes to the skillet and sauté ingredients in skillet for about 5 more minutes. Stir occasionally.
When finished, add contents of skillet to the pot that contains the pasta. Add the ground pepper and mix everything together. Season to taste.
Plate and serve. Garnish with fresh basil leaves.