Cook the quinoa according to package directions, then fluff with a fork and toss with the zest and juice of 1 lime and 1/3 cup chopped cilantro; keep warm.
Preheat the oven to 425°F (218°C). Line a rimmed baking sheet with parchment paper.
Toss the chopped sweet potatoes with 2 tablespoons olive oil and 2 teaspoons taco seasoning; spread in a single layer on a baking sheet and roast 15–20 minutes, flip, then roast another 10 minutes or until tender.
While the potatoes roast, toss the black beans with salt, pepper, and a handful of chopped cilantro.
Make the mango-kale slaw: in a large bowl combine shredded Tuscan kale, sliced mango, chopped jalapeño, 1/4 cup olive oil, juice of 1 lime, 1/2 cup chopped cilantro, and salt to taste; massage the slaw with your hands for 1–2 minutes, then cover and refrigerate until serving.
Roast the tomatillos on the lined baking sheet for about 20 minutes, until charred; note you can roast them at the same time as the sweet potatoes if space allows.
Make the tomatillo-cilantro vinaigrette: add the roasted tomatillos, 4-ounce can chopped green chiles, 2 cups fresh cilantro, 1/2 cup olive oil, juice from half a lime, and salt to taste to a blender and blend until completely smooth; taste and adjust salt if needed.
Assemble bowls: divide the cooked quinoa among four bowls, top with roasted sweet potatoes, seasoned black beans, sliced avocado and mango-kale slaw; drizzle with the tomatillo-cilantro vinaigrette and sprinkle with queso fresco if using. Serve with warmed flour tortillas.