In a large bowl, combine the buttermilk, buffalo sauce, poultry seasoning, garlic powder, onion powder, chili powder, oregano, salt, and black pepper. Whisk together until well combined. Add the chicken cubes to the marinade, ensuring they are fully coated. Cover the bowl with plastic wrap and refrigerate for at least 1 hour, or overnight for maximum flavor.
When you're ready to cook, remove the chicken from the marinade and let any excess drip off. In a separate bowl, place the flour and season it with additional poultry seasoning, garlic powder, onion powder, chili powder, and oregano. Mix well.
Dip each chicken cube into the seasoned flour, making sure to coat it evenly. Shake off any excess flour and set aside on a plate.
In a large frying pan, pour enough vegetable oil to cover the bottom of the pan by about 1 inch. Heat the oil over medium-high heat until it reaches 350°F (175°C). You can test if the oil is hot enough by dropping a small piece of bread into it; if it sizzles, it's ready.
Carefully add the coated chicken cubes to the hot oil in batches, making sure not to overcrowd the pan. Fry for about 4-5 minutes on each side, or until the chicken is golden brown and cooked through. Use a slotted spoon to remove the chicken and transfer it to a cooling rack lined with paper towels to drain any excess oil.
While the chicken is frying, prepare the Sister Schubert's yeast rolls according to package directions. Once they are ready, brush the tops with melted butter and a drizzle of honey for extra flavor.
To assemble your Chicken Minis, slice the rolls in half and place a piece of fried chicken between the halves. You can drizzle a little more buffalo sauce on top if you like it spicy. Serve warm and enjoy!