With creamy squash, sticky chickpeas and tangy yogurt, this vegetarian sheet-pan feast easily serves a crowd. The method here doesn’t bother with cutting rock-hard raw winter squash. Instead, roast them whole until you can rip them apart into wedges. Meanwhile, chickpeas, tomatoes, olive oil and a warming combination of cinnamon, ginger and marjoram concentrate until the chickpeas are buttery-soft and the tomatoes caramelized. Accompany with yogurt and perhaps salad greens dressed with lemon or lime juice. To make ahead, refrigerate the cooked squash pieces, chickpeas and yogurt separately for up to 4 days; reheat the squash and chickpeas covered in a low-temperature oven or serve at room temperature. To make vegan, add lemon or lime juice to non-dairy yogurt until tangy.