Preheat oven to 400 degrees F.
Brush each sweet potato half with olive oil, skin included.
Season the entire sweet potato with kosher salt + cracked black pepper.
Score the top halves (interior flesh) with a knife.
Season each top half with chili powder, paprika and harissa or cayenne, if using.
Bake for 20 mins at 400 degrees F.
Remove from oven and smear the top halves with honey.
Return to oven and bake for another 10 minutes.
Once the sweet potatoes are tender, remove from oven.
Squeeze fresh lime juice over both halves upon serving, and add parsley.