Chop up the chicken, celery, onions, parsley, eggs, and then add to the pasta.
Make the mayo dressing, combine the mayo, milk, lemon juice, and salt and pepper.
Pour the dressing mix over the pasta.
Toss to combine and adjust salt and pepper to taste if needed.
Notes
Place cooked rotini pasta into a large bowl. Chop up the chicken, celery, onions, parsley, eggs, and then add to the pasta. Make the mayo dressing, combine the mayo, milk, lemon juice, and salt and pepper. Pour the dressing mix over the pasta. Toss to combine and adjust salt and pepper to taste if needed.