Preheat the oven to 200C/Gas Mark 6. Line a baking tray with foil. Toss the carrots with the fennel seeds, oil, honey and some sea salt. Roast for 40 minutes until the carrots are tender and crinkly. In the meantime, boil the spelt in water for about 18 minutes, keeping a little bit of bite. While the spelt is cooking, mix all the vinaigrette ingredients together and season. Drain the spelt, season and dress with the vinaigrette. When cool, add the hazelnuts (keep a few for sprinkling on top), spring onions, herbs, orange zest and slices of avocado. Serve with the carrots scattered over the spelt, sprinkle with the remaining nuts and add some extra chopped herbs.