Step 1

Preheat oven to 400 degrees F (200 degrees C). Grease a 9x13 inch baking dish.

Step 2

Heat the vegetable oil in a large skillet over medium-high heat. Fry the potatoes in the hot oil until golden brown and tender, about 7 minutes. Remove with a slotted spoon, and drain on a paper towel-lined plate. Stir the chicken into the remaining oil, and cook until white on the outside, but still pink on the inside, about 2 minutes. Add the onion, and continue cooking until the onion has softened and turned translucent, about 5 minutes. Stir in the harissa, ras el hanout, water, tomato sauce, and butter. Bring to a simmer, then stir in the spinach until wilted. Remove from the heat, and set aside.

Step 3

Beat the eggs in a large mixing bowl until smooth. Stir in the peas, Parmesan cheese, and fried potatoes. Stir in the chicken mixture a spoonful at a time, season to taste with salt and pepper, then pour into the prepared baking dish.

Step 4

Bake in preheated oven until the mixture is firm and golden brown, 15 to 20 minutes. Allow to cool slightly, then cut into 12 squares, and serve warm.