this is a good thing, get it monitored up, you can monitor ipr duty cycle, icp voltage etc to know if there is something high pressure related. But from what youre describing It sounds exactly like what a truck with stiction would do. This is exactly what my truck did with a bad injector or two back when I had stock injectors.
You WILL get a TPS code for a faulty pedal, I've been through like 3 of them before I found a chaffed wire. So this is not your issue.
