1. Prep the Carrots: Preheat oven to 425°F. Wash and dry the carrots (do not peel). For large carrots, cut into 2-inch angled pieces, rotating the carrot to create irregular shapes. For small whole carrots, leave about 1 inch of greens for presentation.
2. Season & Roast: In a small bowl, combine maple syrup, olive oil, curry powder, and ¼ tsp kosher salt. Toss carrots on a parchment-lined rimmed sheet pan with the mixture and season generously with salt and pepper. Roast 20–25 minutes, turning once, until browned and tender.
3. Prepare the Gremolata: Combine lemon zest with pistachios, dill, chives, and a pinch of kosher salt. Chop together until evenly combined.
4. Make the Whipped Tahini: In a quart-sized jar, combine tahini, garlic, lemon juice, and salt. Blend with an immersion blender until smooth. Gradually add cold water, ¼ cup at a time, blending to achieve a pale, creamy, thickened texture. Cover and refrigerate until needed; it will thicken as it chills.
5. Assemble the Dish: Spread whipped tahini on a platter or individual plates. Arrange roasted carrots on top, drizzle with any pan juices, and sprinkle the pistachio-herb topping. Add an extra pinch of flakey salt if desired and serve.