Preheat the oven to 400°F.
In a bowl, combine olive oil, garlic powder, smoked paprika, salt, and black pepper. Add the chicken breasts and coat them well with the mixture.
Place the chicken on a baking sheet lined with parchment paper.
In a separate bowl, toss the diced sweet potatoes with a little olive oil, salt, and pepper. Spread them out on another baking sheet.
Bake the chicken and sweet potatoes in the preheated oven for 25-30 minutes, or until the chicken is cooked through (internal temperature of 165°F) and the sweet potatoes are tender.
Remove the chicken from the oven and let it rest for 5 minutes before slicing.
While the chicken is resting, warm the corn and black beans in a small saucepan over medium heat.
To assemble the bowls, divide the sweet potatoes, corn, black beans, and sliced chicken among four bowls.
Top each bowl with cherry tomatoes, avocado slices, chopped cilantro, a drizzle of BBQ sauce, and a squeeze of lime juice.