Instructions:
Brine Chicken: Bring water, salt, and sugar to a boil in a large pot. Turn off heat and add lemons, thyme, and black peppercorns. Once cooled, submerge chicken in brine and refrigerate overnight.
Prepare Pineapple Throne: Cut off the top of the pineapple, score around the bottom, and remove the rind to create the "throne." Save extra pineapple for the vinaigrette.
Rub Chicken: After brining, pat the chicken dry, inside and out. Apply the spice rub evenly.
Mount Chicken: Place the chicken on the pineapple throne, securing it with skewers.
Cook Chicken: Heat grill to 450-475°F and cook over indirect heat until the internal temperature reaches 160-165°F.