This is a symphylan, commonly refered to as a garden centipede (though note, they're not centipedes, which are Chilopoda). Only about 200 species are known worldwide, so it's not a terribly diverse group, but they can be commonly found in soil.
Some species can be pestiferous on the roots of crops. For example, see the Penn State fact sheet about Scutigerella immaculata: http://ento.psu.edu/extension/factsheets/garden-symphylan-as-a-pest-of-field-crops
I can't tell whether it's a pest species or just an innocuous soil-dweller based on the photo. Considering that you're not reporting a lot of damage to the roots of the pepper, I suspect it's not a pest, or at least not at pestiferous levels.
Posted by: Michael Skvarla
Posted: June 30, 2017