
Bring a large pot of water to a boil; cook pasta until al dente according to package directions. Drain and rinse under cold water. Drizzle with a little olive oil to prevent sticking.
In an extra large bowl, whisk together all the ingredients for the dressing until combined and smooth. Add in the cooked pasta, chicken, broccoli, raisins, celery, almonds, and scallions; toss to combine and coat.
Enjoy right away or refrigerate until ready to serve.