Wash and dry the sweet potatoes and slice into 1/4 inch rounds – no need to remove the skin unless you want to do so.
Toss the rounds in a large bowl with the cooking fat, salt, black pepper, garlic powder and dried oregano.
Spread the seasoned sweet potato rounds out on the lined baking tray. Sprinkle with the unsweetened shredded coconut. Bake until cooked through and the coconut flakes are browned, about 30 minutes.