Preheat oven to 450°F. Line a large baking sheet with parchment paper. Set aside.
In a small bowl, mix together paprika, dried parsley, dried chives, onion powder, garlic powder, salt, and black pepper to create the seasoning blend.
Place the cubed chicken on the prepared baking sheet. Sprinkle with half of the seasoning blend and toss to coat evenly. Reserve the remaining seasoning blend to finish the chicken after baking.
Add the flour and toss again until the chicken is lightly coated. Drizzle with olive oil and toss once more.
Spread chicken out in an even layer and bake for 15 to 20 minutes, or until the chicken is cooked through to an internal temperature of 165°F and lightly crisped on the edges.
While the chicken bakes, prepare the buffalo sauce. In a small saucepan over medium-low heat, melt the butter.
Stir in the hot sauce, vinegar, seasoned salt, garlic powder, and chipotle chili powder (if using). Whisk until smooth and fully combined, about 1 to 2 minutes. Do not let it boil. Remove from heat.
Remove chicken from the oven and pour the warm buffalo sauce over it. Toss well to coat.
Sprinkle with the reserved seasoning blend and toss again.
Return the pan to the oven and bake for another 5 minutes, until the sauce is set and lightly glazed onto the chicken.
Serve immediately while hot.