Cut the breasts in half lengthwise, set aside.
In a large bowl whisk together the pickle juice, milk, powdered sugar, garlic powder, onion powder, pepper, salt, and paprika.
Add the chicken to the marinade and coat the chicken. Cover with plastic wrap and place in the fridge for at least 30 minutes, up to 4 hours.
While the chicken is marinating, make the sauce. In a medium-sized bowl, whisk together the mayonnaise, bbq sauce, honey, dijon, lemon juice, and paprika. Cover with plastic wrap and place in the fridge until ready to use.
Preheat the grill over medium heat. Cook the chicken, flipping occasionally until an internal temperature reaches 165°F in the thickest part of the breast, up to 15 minutes total. Take off the heat and top each piece of chicken with a slice of cheese to melt slightly.
To assemble, remove the tops off the buns, add lettuce and a tomato slice on top. Add a piece of chicken followed by a slice of bacon broken in half so it fits.
Spread the honey roasted bbq sauce on the bottom side of the top bun. Add to the sandwiches and enjoy.