Preheat your oven to 180°C (356°F) and line your baking sheet with parchment paper for easy cleanup.
Spread the fox nuts evenly on the prepared baking sheet in a single layer, making sure they aren't piled up.
Roast the fox nuts in the oven for about 10 minutes, stirring halfway through to promote even browning and aroma development. Keep an ear out for crackling sounds and watch for a golden hue.
Once they turn golden and emit a smoky, nutty aroma, remove the baking sheet from the oven and let the fox nuts rest for 5 minutes—this helps them become extra crunchy.
Transfer the roasted fox nuts to a mixing bowl. Drizzle with oil, then sprinkle with sea salt and smoked paprika if using.
Toss everything together with a spatula until the seasonings are evenly distributed and the nuts are coated with a subtle sheen.
Allow the seasoned fox nuts to cool completely before serving—they will crisp up further as they cool down.
Enjoy your crunchy, smoky roasted fox nuts immediately, or store them in an airtight container for up to a week to preserve their crispness and aroma.