In a large skillet, over a medium heat, add the olive oil. Stir in the garlic and sauté for 30 seconds. Add the shrimp. Cook for 2-3 minutes, or until the shrimp starts to turn pink. Add the olives, roasted peppers and capers. Stir until almost completely cooked. Add the cooked pasta, salt, pepper and olive oil to taste. Heat thoroughly and serve.