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 30 mins at 400 degrees F.
Once the sweet potatoes are tender, remove from oven.
Smear the top halves with honey. Squeeze fresh lime juice over both halves upon serving, and add parsley.