Step 1: Preheat and Prep the Pan - Start by preheating your oven to 400 degrees. While that warms up, line a large sheet pan with parchment paper. This step might seem small, but it makes cleanup a whole lot easier later on. Trust me, future you will appreciate it.
Step 2: Chop the Fresh Ingredients - Take a few minutes to dice the tomatoes, slice the green onions, and prepare the jalapenos. I usually do this all at once so everything is ready to go when it is time to assemble. It keeps things smooth and avoids that last minute scramble.
Step 3: Season the Chicken - In a medium bowl, mix your shredded chicken with the taco seasoning. Give it a good stir so every piece gets coated. This is where the flavor really starts to build, so do not rush it. You want that seasoning evenly spread.
Step 4: Layer the Chips - Spread the tortilla chips across your prepared sheet pan in an even layer. Try not to pile them too high. A nice flat layer helps every chip get its fair share of toppings, which means no one ends up with a plain chip.
Step 5: Add the Toppings - Now comes the fun part. Sprinkle the seasoned chicken over the chips, followed by the black beans, shredded cheese, jalapenos, and tomatoes. I like to make sure everything is evenly distributed so each bite has a little bit of everything.
Step 6: Bake Until Melty - Slide the pan into the oven and bake for about ten minutes. Keep an eye on it. You are looking for the cheese to melt and everything to heat through. The smell alone will let you know you are getting close.
Step 7: Finish and Serve - Once out of the oven, drizzle the taco sauce across the top. Sprinkle on the green onions and add small dollops of sour cream. Serve it up right away while everything is warm and gooey. This is not the kind of dish that waits around.