Remove the spine from the chicken in order to spatchcock it. You should be able to start at the neck and cut backwards towards the thighs. There shouldnt be much resistance, so if you do feel like you're working too hard work you knife away from the spine. Preheat oven to 350F (175C)

Mix paprika, chili powder, thyme, terragon, garlic powder, onion powder, cayenne, rosemary, salt and pepper.

Put the bird in a baking dish and push down on the rib cage so it lays flat. Rub the spice mix you just made all over the chicken. Cook for about 1.5 hrs or until the thickest portion of the breast registers 160F.

While the chicken is cooking you can prepare the rest of the salad. Gather celery, onion, prosciutto, garlic, mayo, mustard, and lemon juice in a large bowl. When the chicken is done let it rest for about 15 minutes. then strip the chicken down getting all the meat you can for the carcass. Shred the meat and add to the bowl. PS. Don't throw out that carcass, you can freeze the bones and combine with other chicken bones and scraps later for chicken broth.

Blend all the ingredients until you get some kind of uniformity. Congrats, you've just made a ton of chicken salad. Serve on a bun with lettuce and tomatoe (bacon too if you want).