Heat oven to 450℉/240℃/220℃ fan (convection)
Put tomatoes chickpeas, fennels, garlic, Olive Oil and fennel seeds in a large roasting dish
Season, give a little mix. Roast for 30 mins so some of the chickpeas and the tomatoes are a little charred on top. (Watch it!)
Make the dressing, by mixing everything together. Season well.
Make the aioli by adding the garlic and seasoning to the mayonnaise.
Serve the chickpea and tomato dish with the green sauce, chilli flakes, a few fennel seeds and the aioli on the side.