Capture the flavors of Morocco in this simple, delicious meal.
Preheat oven to 400 degrees. In a small bowl, stir together cumin, coriander, and cayenne, if using. In a medium pot, bring potatoes to a boil in salted water over high and cook until tender when pierced with a knife, 10 minutes. With a slotted spoon, transfer potatoes to a paper-towel-lined plate and set aside. Return water to a boil, then add peas and cook just until tender, 3 minutes. Drain peas and set aside.
Meanwhile, in a large ovenproof skillet, heat oil over medium-high. Season chicken with salt and cook, skin side down, until golden-brown and crisp, about 5 minutes. Flip and transfer skillet to oven; roast until chicken is cooked through, 15 to 20 minutes.
Remove chicken from skillet and pour off all but 1 tablespoon fat. Add potatoes and 1 1/2 teaspoons spice mix, reserving remaining for Moroccan Meatballs with Couscous and Roasted Carrots, and cook over medium-high, stirring occasionally, until potatoes are golden in spots, 7 minutes. Stir in peas, lemon juice, and chopped cilantro; season to taste with salt and pepper. To serve, place chicken on top of peas and potatoes and sprinkle with cilantro leaves.