Preheat the oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Toss the cubed sweet potatoes and chickpeas with olive oil, turmeric, ginger, and black pepper on the baking sheet until evenly coated.
Roast for 25 to 30 minutes, tossing halfway through, until sweet potatoes are fork-tender and chickpeas are slightly crisp.
While roasting, rinse quinoa under cold water, then combine with 2 cups of water in a small saucepan. Bring to a boil, reduce heat to low, cover, and simmer for 15 minutes or until water is absorbed.
Prepare the dressing by whisking tahini, lemon juice, maple syrup, and 1 tablespoon of warm water in a small bowl until smooth.
Place chopped kale in a large mixing bowl with a pinch of salt and massage with your hands for 60 seconds until leaves are dark green and softened.
Divide the cooked quinoa and massaged kale into two serving bowls.
Top each bowl with the roasted sweet potato mixture and avocado slices.
Drizzle the turmeric-tahini dressing over the top and serve immediately.