Warm the tortillas: Heat a dry skillet over medium heat. Warm each tortilla for 20–30 seconds per side until pliable.
Wrap in a clean towel to keep warm.
Brown the turkey: Add 1 tsp oil to the skillet. Cook the turkey over medium-high heat, breaking it up with a spoon until lightly browned, about 5–6 minutes.
Add aromatics and spices: Stir in onion, bell pepper, and garlic. Sauté 3–4 minutes until tender.
Add chili powder, cumin, smoked paprika, salt, and pepper. Cook 1 more minute. Fold in the black beans and reduce heat to low.
Scramble the eggs: In a bowl, whisk eggs with egg whites (if using), a pinch of salt, and pepper.
Heat another nonstick skillet with a light coat of oil over medium. Pour in eggs and gently scramble until soft and just set, 2–3 minutes.
Combine or keep separate: You can stir the eggs into the turkey-bean mixture for easier assembly, or keep them separate for layered tacos.
Cheese and melt: Sprinkle cheese over the hot eggs or meat so it melts slightly.
Assemble: Spoon a generous portion of protein filling into each tortilla. Top with salsa, avocado, cilantro, a squeeze of lime, and a dollop of Greek yogurt if you like.
Serve hot: Finish with a shake of hot sauce and dig in while everything is warm and melty.