1. Prepare Marinade: In a large bowl, combine Greek yogurt, olive oil, lemon juice, garlic, paprika, cumin, coriander, cayenne pepper, black pepper, and salt. Mix well.
2. Marinate Chicken: Add the chicken cubes to the marinade, ensuring they are fully coated. Cover and refrigerate for at least 1 hour, preferably overnight.
3. Preheat Grill or Oven: If using a grill, preheat to medium-high heat. If using an oven, preheat to 400°F (200°C).
4. Skewer Chicken: Thread the marinated chicken cubes onto the skewers.
5. Cook Chicken: Grill or bake the skewers for about 10-12 minutes, turning occasionally, until the chicken is cooked through and slightly charred.
6. Serve: Garnish with chopped parsley and serve with a side of whole-grain pita or salad.