First preheat your oven to fan 200c then peel two large sweet potatoes and chop in to fries.
Mix 1 tablespoon of olive oil, 1 tablespoon of cornflour, 1/2 teaspoon paprika with one crushed garlic clove and some seasoning in to a bowl and rub into the fries before placing on baking tray and cooking in the oven for 20-25 minutes.
Get a griddle on a medium to hight heat and chop up one onion into 8 wedges, and place on the griddle for 2-3 minutes meanwhile flatten two breasts of chicken with a rolling pin until approx 1/2 cm thick. Rub in 1/2 teaspoon of olive oil 1/2 teaspoon of cumin seeds on to the chicken breasts and place on the griddle to cook along with the onions. The chicken should take 3-4 minutes on each side.
Once everything is cooked serve with yoghurt mixed with harissa paste.