I tried the KFC batter recipe for fried chicken. The one from Colonel Sander's decedent that was found in a scrap book and published by the Chicago Tribune.

Here is the published recipe.

I've got a deep fryer but not a pressure cooker...

The essence is there. I've gone through one to three egg washes to test and the batter has the essence.

I think the spice ratio is correct or very close. I think you need less flour (and maybe some cornstarch to make it less crunchy) to make the seasoning pop a bit.