Preheat oven to 400°F and line a baking sheet with parchment paper.
Peel and dice the sweet potato into 1/2-inch cubes and cut chicken breast into bite-sized pieces.
Toss sweet potato and chicken with olive oil, sea salt, black pepper, garlic powder, and smoked paprika.
Spread the mixture on the baking sheet and roast for 20-25 minutes until the chicken is cooked through and potatoes are tender.
While roasting, rinse and drain the black beans, then warm them in a small pan or microwave.
Assemble the bowl by placing fresh spinach at the bottom, then topping with the roasted chicken, sweet potatoes, and black beans.
Squeeze fresh lime juice over the top before serving.