In a skillet, sauté the chopped bacon until golden brown and crispy; about five minutes and then transfer to a paper towel-lined plate to cool.
Cook 2 hard-boiled eggs; peel and cut in quarters.
Chop, rinse and spin-dry the romaine lettuce and arrange it on a tray.
Arrange the chicken, eggs, avocado, tomatoes, onion, blue cheese and bacon in rows on the salad; sprinkle the finely chopped parsley over the salad.
Transfer the dressing ingredients to a mason jar and shake until thoroughly combined.
Drizzle over the salad, just before serving, or let guests add their own dressing to taste.