For the veggies: Preheat the oven to 450 degrees F. Line a sheet pan with parchment paper.
Add the cauliflower, green and yellow bell peppers, red onion and garbanzo beans to the prepared sheet pan. Drizzle with the olive oil. Mix together the chili powder, cumin, paprika, salt, pepper, turmeric and cinnamon in a small bowl. Sprinkle over the vegetables and toss to fully coat.
Roast until the vegetables are deep in color and tender, 15 to 17 minutes.
For the burritos: To build, lay out one of the tortillas. Spread 2 tablespoons of the hummus onto the burrito. Top with 3 tablespoons of the rice. Add 1/2 cup of the roasted vegetables. Drizzle over 1 tablespoon of tzatziki. Add 1/2 cup of the kale and hot sauce to taste if using. Fold the edges and roll tightly. Wrap in foil until ready to eat; repeat with the remaining tortillas and toppings.