Adjust an oven rack so it's in the center of the oven and preheat the oven to 400°F. Line baking sheet with foil.
Add sweet peppers, jalapeño, and white and light green scallion parts to a small bowl and toss with 2 tablespoons of olive oil. Spread in a single layer onto the lined baking sheet and bake for 10 to 12 minutes, stirring halfway through.
1 medium jalapeño, 3-5 gem peppers, 2-3 green onions, 2 tablespoons olive oil
While peppers are roasting, render the chorizo in a skillet over medium heat. Do not render out all of the fat, rather just enough to crisp it. Turn out onto paper towels to drain. Select an oven-safe platter or cast iron skillet and set aside.
12 oz chorizo sausage
Set the oven to broil. Heat pimento cheese in a large, non-stick skillet on the stove. Do this over low heat and stirring frequently to avoid the cheese separating naturally. Aim for smooth cheese sauce with few lumps.
2 cups pimento cheese
Add a layer of chips to the skillet or platter. Generously add ⅓ of the roasted peppers and onions followed by ⅓ of the chorizo and ⅓ of the melted cheese. Repeat twice more beginning with chips and ending with the cheese sauce.
10 oz tortilla chips
Place the skillet under the broiler for 3 to 5 minutes, or until the top of the cheese is bubbling and the top layer of chips begins to brown lightly.
Remove from beneath the broiler and cool for 2 minutes. Top with sour cream and the reserved green onions. Garnish with fresh cilantro and offer pickled jalapeños, pico de gallo, or salsa on the side. Pile on!
¾ cup sour cream, pico de gallo, green tomato salsa, cilantro leaves, 2-3 green onions