For the Nigella Caesar Dressing:
Add the Nigella Caesar seasoning to a 1 quart container with a wide base, such as a Mason jar.
Pour in the water and blend well with an immersion blender.
With the immersion blender running and immersed in the liquid, slowly pour in the oil, and continue blending until emulsified and thick. The result should be creamy.
For the Chicken:
Place the chicken breast in a zip lock bag and add half of the prepared Nigella Caesar dressing. Close the baggy and move the dressing around until the chicken breast is completely coated. Place the baggy on a plate, in case it leaks.
Refrigerate for a couple hours.
Once the chicken is marinated, discard the marinade and baggy. In a small non-stick sauté pan on medium-high heat, add the chicken breast and sear on one side for 4 minutes. Flip when the edges start to get brown.
Cover the chicken breast and cook for another 5 minutes or until the juices run clear. Set the chicken aside so that it can rest for a few minutes before cutting the chicken into bite-sized pieces.
For the Pasta Salad:
Cook the pasta according to package instructions and let cool.
Meanwhile, in a large bowl, add the cooked chopped chicken, tomatoes, cucumber, and greens. Add the pasta and the remaining Nigella Caesar dressing, then give everything a gentle toss until coated.
Garnish with parmesan cheese and serve.
