01 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large bowl, toss diced potatoes with olive oil, smoked paprika, garlic powder, salt, and black pepper. Spread evenly on the baking sheet.
03 - Roast potatoes for 25 minutes, flipping halfway, until golden and crispy.
04 - While potatoes roast, heat a large skillet over medium heat. Add ground beef and cook, breaking up with a spoon, until browned, about 5–6 minutes. Drain excess fat if needed.
05 - Add onion and garlic to the beef; sauté for 2–3 minutes until softened.
06 - Stir in taco seasoning, salt, and water. Simmer for 2–3 minutes until thickened.
07 - Divide roasted potatoes among four bowls. Top each with taco beef, then arrange cheese, sour cream, cherry tomatoes, black beans, lettuce, avocado, green onions, cilantro, jalapeño, and salsa as desired.
08 - Serve immediately, garnished with extra cilantro and a wedge of lime if desired.