Cut the avocado in half lengthwise, remove the pit, and scoop the flesh into a bowl. Mash with a fork until you reach your desired consistency—I prefer leaving it slightly chunky rather than completely smooth for better texture. Immediately add the lime juice and salt, stirring gently to combine and prevent the avocado from browning. The acid from the lime juice is crucial for both flavor and preventing oxidation.

Fold the cumin into the mashed avocado, then gently stir in the pico de gallo, diced bell pepper, minced jalapeños, and fresh cilantro. Mix until everything is evenly distributed but still retains its texture. Set aside at room temperature—don't refrigerate yet, as cold guacamole loses some of its subtle flavors.

Spread half of the tortilla chips in an even layer on a large baking sheet or oven-safe platter (about 13x9 inches works well). Sprinkle half of the shredded queso quesadilla evenly over the chips, then layer the remaining chips on top, followed by the remaining cheese. This layering ensures better cheese distribution and structural integrity so you don't end up with soggy or bare chips.

Bake the nachos at 375°F for 5-10 minutes until the cheese is fully melted and the chips are warm and crispy. Alternatively, you can microwave for 1-2 minutes on high, checking halfway through. Watch carefully to avoid overheating—you want melted cheese, not burned chips. I prefer the oven method as it keeps the chips crispier overall.

Remove the nachos from the heat and immediately distribute spoonfuls of the prepared guacamole from Step 2 over the top, spreading it gently across the chips. Drizzle the sour cream across the nachos in decorative lines or dollops. Scatter the additional pico de gallo, finely minced jalapeños, diced bell pepper, pickled red onions, and fresh cilantro over the entire platter for visual appeal and layered flavor.

Serve the nachos right away while the cheese is still warm and the chips maintain their crunch. Eat with your hands or a fork, making sure each bite includes some guacamole, cheese, and fresh toppings.