Preheat the oven to 210°C. In a bowl, combine the tandoori spice, tomato puree and half the yoghurt. Season with salt, pepper and a pinch of sugar . Add the diced chicken and stir to combine. Set aside. IMPORTANT: Remember to wash your hands after handling raw meat. Halve, peel and thinly slice the red onion. Pop in a bowl with the white wine vinegar, sugar (see ingredients for amount) and half the nigella seeds. Season with salt and pepper, stir well and set aside.

Chop the vine tomatoes into 2cm chunks. Trim the cucumber then halve lengthways. Chop each half into 4 long strips then chop widthways into small pieces. Pick the mint leaves from their stalks and roughly chop (discard the stalks). Roughly chop the coriander (stalks and all). Trim the root from the iceberg lettuce then half lengthways. Thinly slice widthways.

Pop the tomatoes in a bowl with the remaining nigella seeds and half the coriander. Add a drizzle of oil and a pinch of salt and pepper. Toss to combine and set aside. In another bowl, combine the cucumber, remaining yoghurt and half the mint. Set aside.

Pop the sweet potato fries on a baking tray, drizzle with oil, season with salt and pepper. Toss to coat. Spread out and roast on the middle shelf of the oven until soft and golden, 18-20 mins.

Line a baking tray with foil. Put the marinated chicken on the tray and bake on the top shelf until cooked through, 10-12 mins, turning halfway. TIP: Don't be afraid if the chicken chars - this will add to the flavour! Pop the naans directly on the oven shelf to warm through for the final 1-2 mins. Get ready to serve.

This dish is all about piling it high! Put a naan on each plate and top with the lettuce, followed by the tandoori chicken, sweet potato fries, tomato salad and cucumber raita. Scatter the pickled onions over the top, followed by a drizzle of sweet chilli sauce. Finish with the remaining chopped coriander and mint and dig in!