Preheat oven to 400°F.
Scrub sweet potatoes clean, leaving the skin on. Slice into thin rounds using a knife or mandolin.
Toss with olive oil, salt, paprika, cumin, chili powder, garlic powder, and onion powder.
Arrange in a single layer on a lined baking sheet, making sure the slices do not overlap.
Bake for 30–35 minutes until tender and crisp around the edges. (Optional: flip halfway through for extra crispiness.) If needed, bake an additional 5 minutes.
Meanwhile, brown the ground beef and season with salt (or your favorite taco seasoning).
Layer the baked sweet potatoes on a sheet pan or serving platter. Top with cooked beef and shredded cheese.
Return to the oven for a few minutes, just until the cheese is melted.
Finish with guacamole, pico de gallo, sour cream, and fresh lime wedges.
