So this was an odd one. I kept feeling something under my foot when I was driving the truck. It turns out that the rubber parking brake pad fell off.

I've pressed it back on, but don't think its going to stay as the rubber plug that connects into the metal hole seems worn.

I almost would like to meet the engineer that came up with this solution, since it seems like the amount of work done to the metal pedal to accommodate this rubber pedal pad has to be insane.