Mix dressing ingredients in a jar and shake until well combined.
Bring a pot of salted water to a boil. Cook pasta until very soft, about 2 minutes past the package directions.
Drain pasta in a colander, then transfer to a large bowl. Toss with half the dressing while still warm. Set aside to cool to room temperature, about 30 minutes.
Once pasta has cooled, add the remaining ingredients and dressing and toss to combine.
Notes
1) Feel free to mix and match other fresh herbs like mint, oregano, or dill. If you're using a very strong herb like mint or oregano, I recommend starting with 2 tablespoons, then you can add more to taste.