Preheat oven to 400°F (200°C) and line a baking sheet with parchment paper.
Brush the cut sides of the sweet potatoes with olive oil and season with salt.
Place sweet potatoes cut-side down on the baking sheet and roast for 35 to 40 minutes until fork-tender.
While potatoes roast, cook chicken breasts until the internal temperature reaches 165°F (74°C), then shred using two forks.
In a bowl, combine the shredded chicken with the BBQ sauce until thoroughly coated.
Remove sweet potatoes from the oven, flip them over, and lightly fluff the interior flesh with a fork to create space.
Distribute the BBQ chicken, black beans, corn, and red onion evenly into the sweet potato wells.
Return the assembled bowls to the oven for 5 minutes to ensure all components are heated.
Whisk together the Greek yogurt, lime juice, and cilantro in a small bowl to create the crema.
Drizzle the cilantro lime crema over the hot bowls and serve immediately.