Prep the oven and pan: Preheat your oven to 400°F (200°C).
Line a large sheet pan with parchment for easy cleanup.
Season the chicken: In a skillet over medium heat, warm the olive oil. Add the chicken, taco seasoning (or spice mix), a squeeze of lime, and a pinch of salt. Cook 2–3 minutes until fragrant and warmed through.
Set aside.
Layer the chips: Spread a generous layer of tortilla chips over the sheet pan. Don’t overlap too much or the cheese won’t melt evenly.
Add the first cheese layer: Scatter about half the cheese over the chips. This anchors the toppings and protects chips from getting soggy.
Top with chicken and beans: Distribute the seasoned chicken and black beans evenly.
Add corn, red onion, and jalapeño slices.
Second cheese layer: Sprinkle the remaining cheese over everything. Add a few spoonfuls of salsa, but don’t drench it.
Bake: Place in the oven for 8–12 minutes, until the cheese is fully melted and bubbly and the edges of the chips turn lightly golden.
Add fresh toppings: Remove from the oven and finish with cilantro, avocado or guacamole, more salsa, and a light drizzle of lime. Add sour cream or Greek yogurt in small dollops.
Serve immediately: Bring the pan to the table and serve hot.
Offer hot sauce, extra lime wedges, and any additional toppings on the side.