Preheat the oven to 400°F(200°C) and line a baking sheet with parchment paper.
Fill a large pot with about 1 inch of water and place a steamer basket inside. Bring the water to a boil.
Add the broccoli florets to the steamer basket, cover, and steam for 2 minutes. Remove the broccoli and let it cool slightly.
On the prepared baking sheet, create small piles of shredded Parmesan cheese, spacing them apart evenly.
Place one broccoli floret on top of each cheese pile. Using the bottom of a flat glass, gently smash each broccoli floret.
Combine the salt, garlic powder, and onion powder in a small bowl. Sprinkle the seasoning mixture over the smashed broccoli.
Bake for 15 to 20 minutes, until the broccoli edges are browned and the cheese is crispy. Watch closely near the end so the cheese doesn’t burn.
Let the chips cool on the baking sheet for 5 minutes before removing them.
Stir together the Ranch dressing and Sriracha. Serve on the side for dipping.