Heat the oven: Preheat to 400°F (200°C). Line a baking sheet with parchment for easy cleanup.
Prep the sweet potatoes: Pierce each potato several times with a fork.
Rub with a tiny bit of olive oil and a pinch of salt. Place on the baking sheet.
Roast until tender: Bake 40–55 minutes, depending on size, until a knife slides in easily. For faster cooking, microwave each potato 5–7 minutes first, then finish in the oven 15–20 minutes.
Make the filling: Warm 1 tablespoon olive oil in a large skillet over medium heat.
Add onion and bell pepper; cook 3–4 minutes until softened. Add garlic and cook 30 seconds.
Season it: Stir in cumin, chili powder, smoked paprika, salt, and pepper. Cook 30 seconds to bloom the spices.
Add protein and fiber: Add cooked chicken, black beans, and corn.
Stir until warmed through, 3–4 minutes.
Brighten it up: Turn off heat. Add lime zest, lime juice, chopped cilantro, and diced tomato (if using). Taste and adjust salt, pepper, or lime.
Split the potatoes: When the sweet potatoes are ready, let them cool a couple minutes.
Slice lengthwise and gently fluff the insides with a fork to create space.
Fill and top: Spoon the chicken mixture into each potato. Add a small spoon of Greek yogurt or light sour cream. Sprinkle light cheese, green onions, avocado, or hot sauce if you like.
Serve: Plate with extra lime wedges and salsa.
Enjoy right away while warm.