1Combine marinade ingredients (yogurt, lemon juice, oil, oregano, garlic, salt, pepper), reserving some for basting.
2Marinate chicken in the mixture for 2 hours or overnight.
3Thread marinated chicken onto skewers.
4Grill chicken skewers over medium-high heat, turning often and basting with reserved marinade, until golden brown and cooked through (about 10-15 mins).
5Serve grilled chicken over cooked rice.
6Add tomatoes, cucumber, olives, red onion, tzatziki, feta, lemon, and pita wedges.