Preheat your oven to 400°F and line a baking sheet with parchment paper.
Peel and dice the sweet potato into 1/2-inch cubes.
Toss the sweet potato cubes on the baking sheet with 0.25 tbsp of avocado oil and a pinch of the sea salt and black pepper.
Roast for 20-25 minutes, tossing halfway through, until the edges are golden brown and tender.
While the potatoes roast, heat a large skillet over medium-high heat with the remaining 0.25 tbsp of avocado oil.
Add the ground beef, diced onion, and diced red bell pepper to the skillet, breaking the meat apart with a spatula.
Cook until the beef is browned and the vegetables have softened, about 7-8 minutes.
Stir in the garlic powder, smoked paprika, and the remaining sea salt and black pepper.
Add the chopped kale to the skillet and sauté for 1-2 minutes until it is just wilted.
Gently fold the roasted sweet potatoes into the beef mixture and serve immediately.