Thoroughly wash the romaine lettuce, chicory, and watercress under cold running water, then dry them using a salad spinner. Roughly chop the greens into bite-sized pieces and place them in a large mixing bowl.

Slice the cooked chicken breast, crispy cooked bacon, and hard-boiled eggs into bite-sized pieces. Arrange these ingredients neatly on a cutting board.

Take the large bowl containing the chopped greens and gently toss them together until well combined.

Carefully arrange the cherry tomatoes, diced avocado, cooked bacon, sliced chicken breast, chopped hard-boiled eggs, and crumbled blue cheese atop the greens.

Drizzle the Cobb salad dressing evenly over the salad, ensuring every ingredient gets flavored. Serve immediately.