Season the pork roast generously with salt and black pepper on all sides.
In a mixing bowl, stir together the honey, minced garlic, soy sauce, apple cider vinegar, and dried thyme until well combined.
Place the pork roast in the slow cooker. Pour the honey garlic mixture over the top, turning the roast once to coat it evenly.
Arrange the baby carrots, potato chunks, and sliced onion around the pork in the slow cooker.
Cover and cook on low for 7 to 8 hours, until the pork is very tender and pulls apart easily with a fork.
Remove the pork from the slow cooker and let it rest for 5 minutes before slicing or shredding.
Spoon the vegetables and some of the cooking juices over the pork. Sprinkle with chopped fresh parsley before serving.