Combine the chopped red onion, tomatoes, jalapeño, garlic, lime juice, salt, Italian seasoning, and fresh cilantro in a medium bowl. Mix well and set aside.
For the Guacamole:
In a separate bowl, mash the ripe avocado until smooth.
Add finely chopped red onion, minced garlic, lemon juice, and salt to the mashed avocado. Mix until well combined. Adjust salt to taste.
For the Shrimp:
In a large skillet, heat olive oil over medium-high heat.
Season the shrimp with chile powder, garlic powder, lime zest, salt, and pepper.
Add the seasoned shrimp to the skillet and cook for 2 minutes on each side or until they are opaque in the centers and browned at the edges.
Add butter and lime juice to the skillet, tossing the shrimp until coated. Remove from heat.
Assembling the Nachos:
Preheat the oven to 400°F.
On a large baking sheet or oven-safe dish, spread the tortilla chips in an even layer.
Sprinkle shredded pepper Jack or Monterey Jack cheese over the tortilla chips.
Rinse and drain the black beans. Sprinkle them over the cheese.
Arrange the cooked shrimp over the chips and cheese.
Bake in the preheated oven for about 10 to 12 minutes or until the cheese is melted and bubbly.
Remove from the oven and garnish with fresh cilantro.
Spoon the prepared Pico de Gallo and guacamole over the nachos.
Garnish with pickled jalapeños for extra heat (optional).
Serve the shrimp nachos hot with lime wedges on the side.
Notes
Bean Variation: Experiment with different beans, like refried or kidney, instead of black beans.
Shrimp Options: Use either fresh or thawed frozen shrimp for this dish.
Guacamole Shortcut: Opt for store-bought guacamole or mash a ripe avocado with salt for a quick alternative.
Salsa Swap: Use store-bought salsa or pico de gallo if you're pressed for time.
Cheese Choices: Consider shredded cheddar or a Mexican cheese blend as tasty alternatives.