Put the peppers on a broiler pan and broil them until they are black on all sides. Remove them from the broiler, put them in a bowl and cover with plastic wrap. Let them sit for at least 15 minutes, then remove the plastic wrap and let them cool. Using your fingers scrape off all the black char from the outside of the peppers; use a paper towel if needed to assist with this. Remove the stem and seeds and cut the peppers into 1/2-inch wide strips.
While the peppers are cooling, heat a small skillet over medium-high heat and coat the bottom with olive oil. Add the chorizo and cook until it is crispy on all sides. Remove from the pan to a cutting board and finely chop.
In a small bowl, whisk together the vinegar, 2 to 3 tablespoons of olive oil, the garlic, and pimenton. Season with salt, to taste. In a large bowl toss together the roasted peppers, chorizo, almonds, arugula, and a little of the vinaigrette. Add the vinaigrette in stages to make sure the veggies are well coated but not overdressed. Taste to check the seasoning. Arrange on a pretty serving dish and sprinkle with shaved manchego and scallions. OLE!!