Start by preheating your oven to 400°F (200°C). Line a baking sheet with parchment paper. While the oven heats, chop the tomatoes, avocado, red onion, jalapeño, and cilantro. Set aside. These fresh ingredients will be added after baking for a burst of flavor and color.
Heat the oil in a skillet over medium-high heat. Add the ground chicken and sprinkle in the taco seasoning. Stir often and cook for about 7 minutes until browned. Add the minced garlic and continue to cook for another 1-3 minutes, until fragrant. Drain any extra liquid before removing it from the heat.
Spread your tortilla chips across the parchment-lined baking sheet in an even layer. Sprinkle half the shredded cheese over the chips, then add the cooked chicken and black beans. Finish with the rest of the cheese on top. This layering ensures every chip has a bit of everything.
Place the baking sheet in the oven and bake for 5–7 minutes, or until the cheese is melted and bubbly. Once out of the oven, top with corn, cherry tomatoes, red onion, avocado, cilantro, and sliced jalapeños. Add a dollop of Greek yogurt or sour cream if desired, and serve right away while warm and crispy.