It is very common to find copycat recipes online these days, and there are scores of posts that say they have the "exact" recipe for that famous Colonel's fried chicken. I doubt that, especially since the ingredients vary from post to post! Don't believe everything you read!
I've had a fried chicken spice recipe for many years and the originator claimed it was the "real thing" from the Colonel. I'm sure it isn't but it sure is a good one! I combine these spices:
A teaspoon of each:
I store these combined spices in a jar and when I'm oven frying or pan frying chicken, I use a teaspoon of the spices to every half cup of flour. You can sprinkle more on each piece of chicken before you bake it or after you remove it from your skillet. I soak my chicken pieces in buttermilk for about 30 minutes, then dredge the pieces in the seasoned flour. I prefer to oven fry chicken these days, so I place each piece in a shallow pan that has about 1/4 to a 1/2 cup of canola oil in it. If you want more seasoning, sprinkle it on at this point. Bake the chicken at 350 degrees for about an hour. Turn the pieces over after 30 minutes, so both sides brown. You can turn the pieces more frequently, if you want to brown it all the way around (like the legs). It is possible that it will take a little longer than an hour to finish the chicken, especially if the pieces are larger. I cut chicken breasts into 4 pieces, but the thighs might take a few more minutes to get done.
My mother made oven fried chicken and we call it "Boyfriend Chicken" because she made it as a special meal with our boyfriends or girlfriends came to visit! Mother turned her chicken every 15 minutes and sprinkled each piece with Lawry's Seasoning Salt. Instead of using oil, she melted a stick of butter in her baking pan. I still make this, too ... and it is delicious, too!