In a small bowl mix adobo, Sazon, and pepper and set aside.
Using a paring knife, make 10 to 12 slits in the pork shoulder. Then peel back fat cap but leave attached. Lift fat cap and make slits under cap. Pull cap back down and score top skin with knife. Insert smashed garlic in slits. Rub the pork with the adobo mixture, wrap in aluminum foil and place in a roasting pan. Transfer the pan to the oven and roast for 5 hours.
Raise the oven temperature to 375 degrees F. Remove the aluminum foil and continue roasting for 30 minutes (or desired crispness on skin). Remove pork shoulder from oven and allow to rest for 20 minutes on a chopping board. Pull approximately 2 pounds of pork from the shoulder and chop into small to medium size pieces.
In a medium bowl, mix chopped pork and the scallions. Set pork and scallion mixture aside. Remove peel from the plantains but do not detach peel. Split plantain down middle making 2 slices so you can remove middle (make canoe), set cut piece aside. Take 1/2 cup of pork and scallion mixture and stuff plantains. Place cut piece of plantain back on top and pull up peel. Lightly oil the peel and wrap in aluminum foil. Repeat with remaining plantains and stuffing mixture. Grill,or bake for approximately 20 minutes or until thoroughly heated.
Remove plantains from grill or oven and remove foil and peel. Place plantains on a serving platter. In a small bowl, mix chopped chipotle, honey and olive oil. Drizzle over the plantains and serve.