Preheat your oven to 425°F (220°C) for optimal crispiness.
Wash and scrub the sweet potatoes thoroughly. Cut each sweet potato in half lengthwise, then slice each half into wedges, approximately 1 inch thick.
In a large mixing bowl, combine the minced garlic, olive oil, smoked paprika, ground cumin, dried oregano, cayenne pepper (if using), salt, and black pepper. Mix well until evenly combined.
Add the sweet potato wedges to the bowl with the garlic-olive oil mixture. Toss the wedges thoroughly to ensure they are evenly coated with the mixture.
Line a baking sheet with parchment paper for easy cleanup. Spread the sweet potato wedges in a single layer, ensuring they have enough space in between for even baking.
Place the baking sheet in the preheated oven and bake for 25-30 minutes. Flip the wedges halfway through the cooking time to ensure both sides become golden brown and crispy.
The wedges are done when they are crispy on the outside and tender on the inside. You can check by inserting a fork into the thickest part of a wedge; it should glide through easily.
Remove from the oven and let the wedges cool for a few minutes. Transfer to a serving platter, sprinkle with fresh chopped parsley, and serve warm, either as a side dish or a delicious snack.