Place the squash on a baking sheet and toss with 2 tablespoons of the olive oil, 1 teaspoon of the cumin, the chili powder, smoked paprika, half of the lime juice, 1 teaspoon salt and 1/2 teaspoon pepper. Roast until tender, 15 to 20 minutes.
Heat the remaining 2 tablespoons olive oil in a nonstick skillet. Add the kale and 1/2 teaspoon salt and saute until wilted, 3 to 5 minutes. Set aside.
In a bowl, combine the chickpeas, the remaining 1/2 teaspoon cumin, the remaining lime juice, 1 teaspoon salt and 1/2 teaspoon black pepper. Mash until chunky. Add the avocado and mash again until fully combined.
To assemble the tacos: Spread 1 tablespoon of the avocado hummus on a tortilla, top with 1/4 cup of the roasted squash and some sauteed kale. Sprinkle with queso fresco.