Mix together all the ingredients for the chimichurri sauce in a small bowl and cover, set aside until ready to use. Alternatively you can put all the ingredients without cutting into a food processor and bend.
Heat a large cast iron or stainless steel skillet over medium high heat with enough oil to reach about ½ inch deep in the pan.
While the oil is heating up, mix the flour with salt and pepper and spread on a plate, or something where you can dredge the filets easily.
Pat dry the filets and season on the flesh side with paprika, cajun seasoning and herb mix.
Once the oil is hot, fry the filets skin side down until golden and crispy, about 4 minutes, then flip and fry for about another 2 minutes. Remove from the oil and place on a wire rack with a paper towel underneath for about 2 minutes.
Serve with the chimichurri sauce on top with your favorite sides, eat and enjoy!