Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Slice the sweet potato into very thin rounds and toss them in a bowl with the olive oil, sea salt, and black pepper.
Arrange the sweet potato slices in a single layer on the baking sheet and roast for 10 minutes.
While the potatoes roast, press the tofu to remove excess water, then crumble it into a bowl and mix with chili powder, ground cumin, garlic powder, and nutritional yeast.
Remove the baking sheet from the oven, flip the potatoes, and add the seasoned tofu crumbles to the other side of the pan.
Return the pan to the oven for another 15-20 minutes until the potatoes are golden and the tofu is crispy.
In a small bowl, whisk the Greek yogurt with the juice of the lime and the chopped cilantro to create a smooth crema.
Plate the sweet potato chips, top with the crispy tofu and black beans, then finish with a generous drizzle of the lime crema.