Preheat the oven to 425°F and line two baking sheets with parchment paper.
Slice sweet potatoes into thin rounds using a mandoline or sharp knife.
Toss sweet potato slices with olive oil, cumin, chili powder, garlic powder, paprika, salt, and pepper.
Arrange slices in a single layer on baking sheets and bake for 20 minutes, flipping halfway through, until crispy.
Layer baked sweet potato chips on a large platter.
Top with black beans, shredded cheese, red onion, and jalapeño slices.
Return to oven for 5-7 minutes until cheese melts.
Finish with avocado, cilantro, and dollops of sour cream or Greek yogurt.