Prep all Ingredients per instructions above.
Prep the potatoes: Place the potatoes into a large bowl and cover completely with cold water for 20 minutes (see note). Drain well and pat dry with a towel.
Make Chimichurri Sauce (optional, or use store-bought): In a bowl, combine the chopped parsley, chopped oregano, minced garlic, red wine vinegar, and red pepper flakes. Slowly drizzle in the olive oil while whisking continuously to emulsify the sauce. Season with salt and pepper to taste. Set aside to allow the flavors to meld.
Preheat an air fryer 400°F (204°C). Place fries in the air fryer basket. Cook for 10 minutes then toss around and cook for 10 - 12 minutes longer until golden brown and crispy. Season with salt immediately to taste.
Preheat the grill or stovetop griddle for cooking the chorizo sausages.
Grill the Chorizo Sausages: Place the chorizo sausages on the preheated grill or griddle. Cook the sausages for about 6-8 minutes, turning occasionally, until cooked through and nicely charred.
Toast the Baguette Slices: While the sausages are grilling, cut the baguette slices in half horizontally. Toast baguettes on the grill or in a toaster until they are lightly crispy.
Assemble the Choripan: Place a grilled chorizo sausage in each toasted baguette. Drizzle a generous amount of chimichurri sauce over the grilled chorizo sausages.
Serve the choripan with french fries and cold coconut water.