If using eggs, place in a small saucepan and cover with cold water. Bring to a boil; simmer on medium-low for 15 minutes. Drain; let cool; peel and slice.
Meanwhile, cook meat in a large nonstick skillet over medium-high heat, crumbling it with a wooden spoon, until no longer pink, about 5 minutes. Transfer to a colander; drain off fat.dd oil to the skillet. Add onion, 1/4 cup scallions and garlic; cook over medium heat, stirring often, until softened, 2 to 3 minutes. Stir in chili powder, oregano, cumin, cinnamon and cayenne; cook, stirring, until fragrant, about 1 minute. Add raisins, olives, tomato paste, water and the browned meat; stir to blend. Reduce heat to low, cover and simmer, stirring occasionally, for 10 minutes. Season with pepper. Garnish with the remaining scallions and the hard-cooked eggs, if desired.