Preheat the oven to 425 degrees and prepare a sheet pan with parchment paper or a silicone baking mat.
Remove the core from a head of cauliflower, and cut the cauliflower into bite-sized pieces.
Drain and rinse the canned chickpeas.
Add the chickpeas and cauliflower pieces into a large bowl.
Toss the cauliflower and chickpeas with ¼ cup buffalo sauce and 2 teaspoons of garlic powder.
Pour the cauliflower/chickpea mixture onto a baking sheet and spread it out evenly on the baking sheet.
Roast in the oven for 25-30 minutes until the cauliflower is brown and the chickpeas are crispy.
Remove from the oven and allow to cool to room temperature.
In the meantime, prepare the pasta and vegan buffalo sauce.
Cook the noodles according to the package instructions.
Drain in a colander and rise with cold water, moving the noodles around to cool all of them noodles.
Transfer the noodles to a bowl.
Whisk the cashew mayo and the remaining ¼ cup of buffalo sauce together and set aside.
Add the cooled cauliflower/chickpea mixture to the noodles, and add the green onions, carrots, and celery.
Pour the dressing into the bowl and toss to coat the noddles and vegetables.
Garnish with fresh dill on top.