Cook the eggs, if you don't have hard-boiled eggs in the fridge, to your liking.
Assemble:
In a large bowl or serving dish, layer the chopped romaine and shredded purple cabbage as the base. Top with chickpeas, pickles, and red onion.
Flake the tuna and distribute it evenly over the top. Drizzle with the white wine vinaigrette or your favorite dressing.
Serve:
Divide the salad into 4 bowls. Place two egg halves in each bowl.
Prep ahead tips:
You can assemble the salad ingredients up to a day in advance, except for the eggs and the dressing. Keep the salad covered and refrigerated. Drizzle with the dressing and then place the eggs on top for the best texture and flavor.