01 - Preheat grill or grill pan to medium-high heat.
02 - Coat chicken breasts with olive oil, garlic powder, Italian herbs, salt, and black pepper evenly.
03 - Grill chicken breasts for 6 to 7 minutes per side until fully cooked and juices run clear. Transfer to plate and rest for 5 minutes before slicing thinly.
04 - Whisk mayonnaise, lemon juice, Dijon mustard, Worcestershire sauce, minced garlic, anchovies (if using), grated Parmesan, salt, and pepper together until smooth. Adjust seasoning to taste.
05 - In a large bowl, combine chopped romaine lettuce, croutons, and Parmesan cheese.
06 - Pour half of the dressing over the salad and toss gently to coat all ingredients.
07 - Arrange sliced grilled chicken breast atop the salad.
08 - Drizzle remaining dressing over the chicken if desired. Garnish with extra Parmesan and freshly ground black pepper before serving immediately.