Whisk together all ingredients for crema In a small bowl. Cover and refrigerate until ready to use.
Preheat oven to 400°F. Line a large baking sheet with parchment paper or aluminum foil and brush with 1 tablespoon of olive oil.
Toss sweet potato rounds, remaining 1 tablespoon olive oil, garlic powder, chili powder, paprika, salt and pepper in a large bowl. Arrange rounds into an even layer on prepared baking sheet.
Bake for 20-25 minutes or until tender. Remove from oven and top with beans, corn and cheese. Return to oven for 5-7 minutes or until cheese is melted.
Remove from oven and top with onion, tomato, avocado and jalapeno. Sprinkle with cilantro and serve with salsa and cilantro lime crema.