Preheat your air fryer (or pre-heat oven to 220 °C/425 °F if baking).
Rinse and peel the jicama. Slice into wedges: roughly 3–4 inches long, about ½-inch thick. You should feel a firm, crisp flesh.
Place the wedges in a big bowl and drizzle with the avocado oil. Toss so each wedge glistens with oil.
Sprinkle over the smoked paprika, garlic powder, onion powder, salt, pepper (and cayenne if using). Toss again until evenly coated and you can smell the smoky spice.
Arrange the wedges in the air fryer basket in a single layer (don’t overcrowd!). Air-fry for ~12 minutes, then flip the wedges and continue for another 10–13 minutes, or until the edges are golden-brown and crisp, and the inside is tender when pierced with a fork. (If oven-baking, spread on a lined baking sheet and bake ~20–25 minutes, flip, then another ~10 minutes.)
While the wedges are cooking, mix together all the dip ingredients in a small bowl. Taste and adjust seasoning—add more paprika for deeper smokiness or extra lemon for brightness.
Serve the hot jicama wedges immediately, with the smoky yogurt dip on the side. Sprinkle chopped chives or parsley over the dip for a fresh green pop. You’ll hear that satisfying little crunch, feel the warm tender inside give way, and taste the smoky, slightly sweet root-vegetable beneath the savory coating.