Preheat your oven to 425°F (220°C).
Peel the sweet potatoes and cut them into evenly sized fries. Aim for a uniform size to ensure even cooking. If you prefer, soak the cut fries in cold water for 30 minutes to help them crisp up better. Drain and pat dry thoroughly with a clean kitchen towel.
In a large bowl, combine the olive oil, paprika, garlic powder (if using), onion powder (if using), ground cumin, dried rosemary, and salt. Stir well to combine. Add the sweet potato fries to the bowl and toss them until they are evenly coated with the seasoning mixture.
Line a baking sheet with parchment paper or lightly grease it with a small amount of olive oil to prevent sticking.
Spread the seasoned sweet potato fries in a single layer on the prepared baking sheet. Ensure there is some space between the fries for optimal crispiness. Avoid overcrowding the pan.
Place the baking sheet in the preheated oven. Bake for 20-25 minutes, turning the fries halfway through the cooking time to ensure even browning. The fries should be golden brown and crispy on the outside.
Depending on your oven and the thickness of your fries, you might need a few extra minutes to achieve the desired crispiness. Keep an eye on them to prevent burning.
Once baked to your desired crispiness, remove the fries from the oven and let them cool slightly on the baking sheet. This cooling time helps the fries firm up a bit more. Taste and adjust seasoning if needed.
For added flavor, you can sprinkle a little extra salt or a pinch of your favorite AIP-compliant herbs before serving.