Preheat the oven to 425°F (220°C).
Arrange 1 oz of tortilla chips (approximately 14 chips, depending on brand) on each of four oven-safe plates or spread all 4 oz on a single large baking sheet.
Warm a large, nonstick sauté pan over high heat. Add the ground turkey, then season with cumin, garlic powder, kosher salt, and black pepper. Sauté, using a wooden spoon to break the turkey into small crumbles, until fully cooked, about 5 minutes.
Once cooked, incorporate the black bean dip into the turkey mixture, stirring thoroughly to combine.
Distribute the seasoned turkey mixture evenly over the arranged tortilla chips, then sprinkle the Mexican cheese blend across the top.
Place in the preheated oven and bake for approximately 6 minutes, or until the cheese has melted to your liking.
Remove the nachos from the oven. Add toppings by layering with pico de gallo, light sour cream, chopped cilantro, and jalapeño slices if desired.
Serve immediately and enjoy this delicious, flavor-packed dish.