Preheat the oven to 220°C.
Cut the cauliflower into 1–2cm florets, finely slicing the stalk and any nice leaves, and chucking it all into a sturdy high-sided roasting tray as you go.
Toss with the curry paste and 1 tablespoon of olive oil until evenly coated.
Roast for 30 minutes, or until golden and gnarly.
Meanwhile, pile the flour into a bowl with a pinch of sea salt, then gradually add 200ml of water and mix into a dough.
Knead on a flour-dusted surface for 2 minutes, then stretch it out to 1cm thick, pressing all over with your fingertips to create dimples.
Leave to rest.
Preheat the grill to high.
Transfer the cauliflower tray to a medium heat on the hob.
Add all the chickpeas (with the juice from one tin) and the coconut milk.
Roughly chop and stir in the tomatoes and simmer for 10 minutes, stirring occasionally.
Meanwhile, brush the dough with 1 tablespoon of oil and place directly on the bars of the oven to grill for 10 minutes, or until golden (keep an eye on it).
Roughly chop the top leafy half of the mint (reserving a few small leaves), and stir through the curry with the mango chutney, then season to perfection.
Serve with the remaining mint sprinkled on top and the flatbread on the side, for dunking.