Add the radish to a mixing bowl, along with juice from half of the lemon and a small pinch of salt. Stir to combine, then leave to pickle while you complete the remaining steps.
Add a splash of olive oil to a non-stick frying pan on a medium-high heat. When the oil is hot, add the chickpeas and cook for 8-10 minutes or until they get crispy and begin to char.
Meanwhile, to make the tzatziki, use your hands to squeeze the grated cucumber over a bowl to remove as much water as possible (we save the cucumber water for smoothies). Add the grated cucumber to a separate mixing bowl, along with the yoghurt, garlic, juice from the remaining half of lemon and a small pinch of salt, then set aside.
When the chickpeas are crispy and lightly charred, reduce the heat to low, then stir in 2 tablespoons of the harissa paste, followed by the maple syrup and a small pinch of salt. Cook for 10-15 seconds, then remove from the heat.
To plate up, quickly warm the flatbreads in a toaster, then top them with the tzatziki, followed by the pickled radish and harissa chickpeas. Next, in a small bowl, combine the remaining tablespoon of harissa paste with a splash of olive oil, then drizzle it over the chickpeas. Finally, tear the parsley leaves and sprinkle them over the top. Enjoy!