Preheat the oven to 400°F.
Dice the sweet potato into bite-sized cubes and toss with olive oil, salt, pepper, and half of the ground cumin and smoked paprika.
Spread the sweet potato cubes on a baking sheet and roast in the oven for about 25-30 minutes, until tender and slightly caramelized.
While the sweet potatoes are roasting, heat a non-stick skillet over medium-high heat.
Season the lean ground beef with the remaining cumin, smoked paprika, salt, and pepper.
Cook the beef in the skillet, breaking it apart as it browns, until fully cooked and no longer pink, about 6-8 minutes.
Dice the red bell pepper and add it to the skillet during the last 2 minutes of cooking to soften slightly.
Assemble the bowl by placing a bed of fresh spinach at the base, then topping with the spiced beef, roasted sweet potatoes, and red bell pepper.
Serve warm and enjoy your nutrient-packed bowl.