Rinse and dry three bunches of hearts of Romaine lettuce. Chop into bite size pieces, and place in a large serving bowl.
Cut up 1lb of previously cooked chicken. You can also use rotisserie chicken here. Cut into bite size pieces or shred. Set aside.
Chop celery, green & red onions and parsley.
In a small bowl combine yogurt and mayonnaise. *NOTE: I use half yogurt with the mayonnaise to reduce the fat & calories, and add protein, but you can choose to use all mayonnaise or all yogurt.
To a large bowl, add chicken, onions, almonds, parsley, celery, and yogurt mixture. Season with salt and pepper to taste. Mix well until combined. Top chicken mixture over bed of lettuce. Enjoy!