Preheat the oven to 400°F. Toss the farro with 1/2 tablespoon olive oil, salt, and pepper and spread evenly on a parchment-lined baking sheet. Toss the potatoes with 1/2 tablespoon olive oil, salt, and pepper, then spread them evenly on a parchment-lined baking sheet. Roast both for 20-25 minutes, turning potatoes once halfway through, until tender and caramelized.
Place the chopped kale in a large bowl. Drizzle with 1 tablespoon of olive oil, 1 tablespoon of lemon juice, and a pinch of salt. Using your hands, lightly massage the kale for 2–3 minutes until the leaves soften and turn a deeper green.
In a small bowl, whisk together tahini, lemon juice, maple syrup, and garlic. Add water a tablespoon at a time until the dressing reaches a smooth, pourable consistency. Season with salt and pepper to taste.
Into the bowl with the massaged kale, add the roasted potatoes, roasted farro, and shallots. Drizzle with the tahini dressing and toss gently to combine.