Lemony chicken kebabs

Name: Lemony chicken kebabs
Ingredients: 1/3 cup (80ml) olive oil; 2 tablespoon coarsely chopped preserved lemon rind; 2 tablespoon lemon juice; 4 clove garlic, halved; 4 (cm) (1½ inch) piece fresh ginger (20g), grated; 1 teaspoon each ground coriander and cumin; 1/2 teaspoon ground turmeric; 1/4 teaspoon ground cinnamon; 1 tablespoon light brown sugar; 2 tablespoon fresh marjoram leaves; 1 kilogram (2 pounds) chicken thigh fillets, chopped coarsely; 1 1/2 cup (420g) greek-style yogurt; 1/3 cup finely chopped fresh coriander (cilantro); 1 lemon (140g), cut into wedges