In a skillet, brown the meat with the remaining onion and oil. Add the garlic, the remaining pepper, or more to taste, the olives, and spices. Cook for about 2 minutes. Add the remaining tomatoes. Bring to a boil and reduce until almost dry. Season with salt and pepper. Let cool. With the rack in the lowest position, preheat the oven to 180 °C (350 °F). Line a baking sheet with parchment paper.