In a bowl, toss the diced potatoes with olive oil, garlic powder, smoked paprika, salt, and pepper until well-coated.
Spread the seasoned potatoes in a single layer on a baking sheet. Roast in the preheated oven for 25-30 minutes, or until the potatoes are golden brown and crispy, flipping halfway through for even cooking.
While the potatoes are roasting, prepare the taco bowl toppings. In a separate bowl, combine black beans, corn, and cherry tomatoes. Season with a pinch of salt and pepper to taste.
Once the potatoes are done, take them out of the oven. In bowls, layer the roasted potatoes as the base, then add the black bean and corn mixture, followed by diced avocado, shredded cheese, and a dollop of sour cream or Greek yogurt.
Finish with fresh chopped cilantro on top and serve with lime wedges on the side for an added zest.
Notes
Feel free to customize toppings based on your preference.