Preheat your grill to 450 degrees F for 2 zone cooking, one side with direct flame heat and the other side with no flames.
Season your chicken breasts on all sides with the Homemade Sweet BBQ Rub. Place on the indirect side of the grill. Close the lid and cook for 6-8 minutes per side, or until the internal temperature reads 145 degrees F.
Baste the chicken breasts on all sides with 1 cup of Stubb's Original Bar-B-Que Sauce and move them over to the direct heat side of your grill. Cook for 2-3 minutes per side, until the internal temperature reaches 160 degrees F.
When you move your chicken to the direct heat, arrange your bacon slices on the indirect heat side of the grill and cook for 2-3 minutes per side. Remove to a plate and set aside until ready to assemble your sandwiches.
Move the chicken to the indirect side of the grill and cook for 2-3 more minutes until the cheese melts and the chicken reaches 165 degrees F internal temperature.
Toast your sandwich buns for 1-2 minutes on direct heat and set on your serving platter to assemble your sandwiches.
Place the grilled Bar-B-Que chicken breast on the bottom bun. Top each chicken breast with 2 slices of the maple peppered bacon, 2-3 onion rings, a few pickled jalapenos, and a healthy drizzle of additional Stubb's Original Bar-B-Que Sauce. Serve hot and enjoy!