Make the meat sauce: Heat oil in a (what size by inch? is it non-stick? ex. 12") skillet over (what level? ex. medium-high) heat. Add peppers and onions and cook, stirring often, until soft, (how many? ex. 8–10) minutes. Using a slotted spoon, transfer onion mixture to a plate and set aside. Add ground meat and chorizo to skillet and cook, breaking meat up into (what size? ex. "tiny pieces"), until browned, (how many?) minutes. Add reserved onion mixture, along with tomatoes, wine, chile flakes, bay leaves, and cinnamon and bring to a boil. Reduce heat to medium and cook, (are you stirring? how frequently? ex. "stirring often"), until sauce thickens, about (how many?) minutes. Remove sauce from heat, discard bay leaves and cinnamon, and season with salt, pepper, and nutmeg; let cool. (how many cups of sauce does the recipe make? how many oz.?)
Make the béchamel: Heat butter in a (what size by qt.? ex. 4-qt.) saucepan over medium-high heat. Add flour and cook, whisking constantly, until smooth and slightly toasted, (how many?) minutes. Add milk; cook, whisking often, until sauce coats the back of a spoon, (how many?) minutes. Remove from heat, add 3⁄4 cup cheese and egg yolks; season with salt, pepper, and nutmeg. Stir until smooth; set aside. (how many cups of béchamel does the recipe make? how many oz.?)
Heat oven to (what temperature? ex. 350°). Bring a large pot of salted water to a boil; add pasta and cook halfway through, about (how many?) minutes. Meanwhile, whisk egg whites in a large bowl until frothy (how long?). Stir in remaining cheese; drain pasta in a colander and then toss with egg white–cheese mixture to coat evenly. Set aside.
Grease a deep (what size? ex. 9"x13") baking dish with olive oil. Place half the pasta mixture (how many cups?) on bottom of dish and cover evenly with meat sauce. Top with remaining pasta mixture. Pour béchamel over pasta, spreading it evenly with a rubber spatula. Bake until the top is golden brown, about (how many minutes/hours? ex. 1 hour). Transfer to wire rack; cool (how long? ex. 20 minutes) minutes before serving.