Preheat oven to 425F.
Peel and chop sweet potato into cubes, break up cauliflower into florets, and slice red bell pepper into strips.
In a large mixing bowl, add olive oil, garlic, and spices. Add prepped vegetables and toss to coat completely.
Spread vegetables in an even layer on a baking sheet and bake for 25-30 minutes, flipping halfway through.
Remove from oven and sprinkle lime juice on top of the finished vegetables while hot. Serve on flour tortillas with lettuce, cilantro, avocado, hot sauce, and creamy jalapeno aioli.