Remove the chicken parts from its cavity and reserve for the stock. Pat the chicken dry with a paper towel and place in a baking dish. Rub the chicken down liberally (inside and out) with salt, pepper, and olive oil (1 tablespoon of each). Bake for 50 – 60 minutes or until the chicken registers 160° F in the thick part of the breast. Let cool. Chop.
While the chicken is roasting, you can chop the celery and parsley and halve the grapes.
In a small pan, toast the almonds on medium heat until then begin to brown. Then add the poppy seeds and toast for a minute or two more.
When the chicken has cooled, combine the chicken, celery, almonds and poppy seeds, grapes and mayo in a large bowl.
Toss well. Taste. Add salt and pepper to taste.
To serve, toast the croissants and wash and dry the butter lettuce. Slice the croissant in half, but not all the way through. Line with a butter lettuce leaf and mound with chicken salad.
Notes
It’s a great idea to plan a few chicken dishes around roasting a chicken. There’s definitely efficiency in roasting a couple together. For example, make chicken noodle soup and chicken salad on the same day.