Pound each piece to about ½-inch thickness using a meat mallet. Season both sides with seasoning salt or salt and black pepper.
Create a breading station with 3 bowls. Bowl 1 will be the Kentucky colonel seasoning. In bowl 2, make an egg wash whisking together the eggs and buttermilk. In bowl 3, add crushed saltines.
In a large skillet, heat about ½ inch of oil over medium-high heat until it reaches 350°F.
Coat each pork tenderloin slice with the seasoned flour, shaking off any excess. Next, dip into the egg mixture, allowing any excess to drip off. Lastly, coat with cracker crumb mixture, pressing lightly to adhere the crumbs.
Fry the breaded pork cutlets 2-4 minutes per side, or until golden brown and have an internal temperature of 145°F. Remove to a wire rack or plate lined with paper towels and rest for 3 minutes.
Place each piece of fried pork on toasted or warm buns and add your favorite toppings, such as lettuce, tomato, pickles, and mayonnaise.