Cook the rotini pasta according to package instructions. Drain and rinse under cold water to cool. Set aside.
In a large bowl, combine the cooked pasta, shredded chicken, snap peas, red bell pepper, shredded carrots, green onions, and cilantro.
In a separate bowl, whisk together the hoisin sauce, soy sauce, rice vinegar, sesame oil, ginger, and garlic until well combined. Season with salt and pepper to taste.
Pour the dressing over the pasta salad and toss gently to combine all ingredients evenly.
Cover the bowl and refrigerate for at least 30 minutes to allow the flavors to meld.
Serve chilled, garnished with additional cilantro if desired.