Cook the pasta: Bring a large pot of salted water to a boil. Cook pasta until al dente according to package directions. Reserve 1 cup of pasta water, then drain.
Prepare the ricotta mixture: In a large bowl, combine ricotta, lemon zest, lemon juice, Parmesan cheese, salt, and black pepper. Mix until smooth and creamy.
Sauté garlic: In a skillet, heat olive oil over medium heat. Add minced garlic and sauté until fragrant (about 1 minute). Do not let it burn.
Combine pasta with sauce: Add hot pasta to the ricotta mixture, tossing well. Pour in some reserved pasta water a little at a time until the sauce reaches a silky, creamy consistency.
Add herbs and finish: Stir in fresh basil, parsley, and chives. Toss well and adjust seasoning with extra salt, pepper, or lemon juice as needed.
Serve immediately: Garnish with extra Parmesan, herbs, and a drizzle of olive oil if desired.