Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Dice the sweet potato into 1/2-inch cubes and slice the chicken breast into bite-sized strips.
Place the chicken and sweet potatoes on the baking sheet, drizzle with olive oil, and sprinkle with sea salt, black pepper, garlic powder, and smoked paprika.
Toss everything together until evenly coated, then spread in a single layer.
Roast for 20 to 25 minutes, or until the chicken is cooked through and the sweet potatoes are tender and lightly browned.
During the last 3 minutes of roasting, add the rinsed black beans to the tray to warm them through.
Place the baby spinach in a serving bowl and top with the hot roasted chicken, sweet potatoes, and beans to slightly wilt the greens.
Drizzle the entire bowl with fresh lime juice and serve immediately.