Mix together marinade: In a large bowl or zip-top bag, combine the Greek yogurt, garlic, lemon juice, olive oil, red wine vinegar, parsley, and all spices.
1½-2 tsp. kosher salt, freshly cracked black pepper, 4-6 cloves garlic, 3/4 cup full-fat Greek yogurt, 1-2 Tbsp. fresh lemon juice, 1-2 Tbsp. fresh parsley, 2 Tbsp. extra virgin olive oil, 1 Tbsp. red wine vinegar, 1/2 tsp. sumac, 1/2 tsp. cumin, 1 tsp. paprika, 1 tsp. oregano, 1 tsp. onion powder
Add chicken: Add the chicken thighs and toss until fully coated.
2-2½ lbs. boneless, skinless chicken thighs
Marinate: Cover and refrigerate for at least 30 minutes, or up to 8 hours (max 12 hours, see notes below). Start Timer Remove from fridge about 15-20 minutes before cooking.
Before baking: scrape off most of the excess marinade, leaving just a thin coating. This will help give you better browning, less watery pan juices, and no broken yogurt sauce.
Bake: Preheat the oven to 425°F. Arrange the chicken in an oven safe baking dish or place chicken on a wire rack over a sheet pan. (The excess liquid drips away, and the chicken browns much better). Bake for ~25 minutes or until the chicken reaches an internal temp of 165°F. Start Timer You can broil at the end for a few minutes or a little color. Note: Some separation is completely normal as the chicken releases juices during cooking. The flavor will still be delicious.
Finish: finish with a squeeze of lemon juice, zest, and fresh parsley.
lemon juice + lemon zest, extra parsley
Serve: serve in rice bowls, in pita, over salads, with potatoes, etc.