Preheat the oven to 180C/356F and line a baking tray. Chop the pumpkin to your liking – pieces slightly larger than bite size are ideal. Remove the skin if you intend to do so – I like to keep it on.
In a large mixing bowl, whisk together the oil with all the spices for the pumpkin, and add the preserved lemon, if you’re using it. Add the pumpkin to the bowl, and use your hands to make sure the pumpkin is evenly coated in oil and spices.
Lay the pumpkin evenly on the baking tray, ensuring to leave space between the pieces. Failure to do so will result in soggy pumpkin.
Place the pumpkin into the oven for at least half an hour – this may be slightly shorter or longer, depending on how thick your pieces are.
Put all the ingredients for preserved lemon and herb oil into your food processor, and blitz until a smooth, green sauce forms. Decant from the blender and into a bowl, ready to drizzle.
Once the half hour is up or the pumpkin is soft, turn the grill on, and leave it for a couple of minutes to develop a bit of crunch.
While the pumpkin is under the grill, heat a nonstick saucepan to a high heat, and grease it with a tiny bit of oil. Slice your haloumi into whatever size you desire, and then place it onto the hot pan. It should sizzle upon contact. Cook the haloumi slices for a minute or so each side – enough to make them melty and develop a golden brown colour, but not enough to burn them. Immediately remove from the heat.
To assemble, lay the warm pumpkin on the serving platter, followed by the haloumi. Dot the Greek yoghurt and preserved lemon herb sauce on top, and finish with the pomegranate arils, any herbs leftover for garnish, and a zesting of microplaned lemon rind. You could also add a drizzle of balsamic vinegar or olive oil. Serve immediately.