Preheat the oven to 200°C fan and line a roasting tray with baking paper. Add the cubed potatoes, drizzle over 1 tbsp olive oil, then season with chipotle fajita seasoning mix, sweet paprika and salt. Toss everything together until evenly coated, spread out in a single layer and bake in the centre of the oven for 30–35 minutes, flipping carefully once halfway through until golden and crispy.