Make the Dressing: In a medium bowl, whisk together Dijon mustard, lemon juice, Worcestershire sauce, mayonnaise, garlic, and anchovy paste (if using). Stir in the grated Parmesan cheese and black pepper. Set aside.
2 ½ teaspoons Dijon mustard, 2 ½ tablespoons fresh lemon juice, 2 ½ teaspoons Worcestershire sauce, 1 cup mayonnaise, 2 ½ teaspoons minced garlic, 1 ¼ teaspoons anchovy paste, ½ cup finely grated Parmesan cheese, ⅓ teaspoon black pepper
Cook the Pasta: Bring a large pot of salted water to a boil. Add the pasta and cook according to package instructions until al dente, about 10-12 minutes. Drain the pasta. If you prefer a cold pasta salad, rinse with cold water and drain well. If serving warm, let it cool slightly before mixing.
10 ounces uncooked pasta
Assemble the Salad: In a large mixing bowl, combine the cooked pasta, chopped Romaine, and shredded chicken. Toss the pasta and chicken together first before adding the dressing.
2 ½ Romaine hearts, 2 ½ cups about 12 ounces shredded rotisserie chicken or cooked chopped chicken breast
Add the Dressing: Pour the prepared dressing over the salad and toss until everything is well coated.
Top and Serve: Sprinkle with croutons (if using) and shaved Parmesan cheese. For best texture, serve immediately. If making ahead, store in the fridge and toss in croutons just before serving.
1 ¼ cups croutons, ⅔ cup shaved Parmesan cheese