Preheat oven to 400°F (because roasting makes everything better).
Toss sweet potatoes with oil, smoked paprika, cumin, chili powder, and salt in a bowl.
Spread evenly on a baking sheet and roast for 20-25 minutes, flipping halfway.
Heat olive oil in a skillet over medium heat and add black beans.
Stir in garlic powder, cumin, and salt, cooking for 3-5 minutes until warm.
Warm tortillas in a dry skillet or microwave (cold tortillas are a crime).
Assemble tacos by layering sweet potatoes, black beans, and toppings.
Squeeze fresh lime juice over everything for a final flavor boost.
Serve immediately because waiting is overrated.