In a bowl, whisk together the yogurt, 3 tablespoons hot sauce, brown sugar, paprika, garlic powder, cayenne and chili powder. Add the chicken and toss to coat. Cover and marinate for 30 mins-1 hour.
In a small bowl, mix 2 tablespoons hot sauce with 2 tablespoons olive oil or butter. Set aside Nashville hot oil.
Preheat the oven to 400°F. Dredge marinated chicken in flour. Arrange on a foil-lined baking sheet sprayed with cooking spray. Bake 25-30 minutes until cooked through and crispy.
Remove chicken from the oven, sprinkle with about a tablespoon of the nutritional yeast, and brush generously with the Nashville hot oil. Sprinkle with extra paprika or cayenne if desired.
Meanwhile, make the gravy by melting 1 tablespoon butter in a saucepan over medium heat. Whisk in 1 tablespoon flour and cook 2 minutes. Gradually whisk in chicken broth and simmer until thickened, about 5-10 minutes. Season with salt and pepper.
Boil potato cubes until fork tender, about 15 minutes. Drain and mash with milk and 2 tablespoons of nutritional yeast. Season to taste.
In a skillet, cook shallot and garlic 1 minute until fragrant. Add kale and cook 2-3 minutes until wilted.
To assemble, add mashed potatoes to a bowl. Top with Nashville hot chicken, and kale mixture and drizzle with gravy. Sprinkle with remaining nutritional yeast. Garnish with scallions or red onion if desired. Serve with additional hot sauce on the side if desired. Enjoy!