Prepare the dressing: In a small bowl, whisk together the white wine vinegar, olive oil, honey Dijon mustard, salt, and pepper until smooth and well combined. Set aside.

Cook the chicken and bacon: If you haven't already prepared your chicken breast and bacon, cook them according to your preference (grilled, baked, or pan-seared). Once done, cube the chicken and chop the bacon into bite-sized pieces.

Prepare the eggs: Boil the eggs to your liking (hard or soft-boiled). Once cooked, peel and slice them.

Assemble the salad: In a large bowl or platter, lay down a bed of chopped romaine lettuce. Arrange the cubed chicken, sliced eggs, bacon pieces, crumbled feta, cubed avocado, cherry tomatoes, and optional red onion slices on top of the lettuce.

Dress the salad: Drizzle the honey Dijon dressing over the salad. You can toss the salad gently to combine the ingredients or serve it as a composed salad with the dressing on the side for individual serving.

Serve and enjoy: Serve immediately and enjoy the hearty flavors and textures of this classic Cobb Salad.