To a medium skillet add paprika, cumin, coriander, turmeric, cinnamon, cayenne pepper and cardamom.
Cook over medium heat until slightly toasted and fragrant, stirring frequently, about 1 – 2 minutes. (In a rush this step can be skipped, it just adds a little more flavor).
In a large mixing bowl whisk together Greek yogurt, oil, lemon juice, garlic, ginger, spices from skillet, and season with salt and pepper (I use 1 1/2 tsp salt and 1 tsp pepper).
Add chicken thighs and toss well in mixture to coat evenly.
Cover bowl and transfer to refrigerator and let marinate at least 3 hours and up to 10 hours.
Preheat a grill over medium-high heat to about 425 degrees.
Clean grill grates and brush with oil.
Grill chicken about 10 – 12 minutes per side for bone-in thighs (5 – 7 minutes per side for boneless thighs), while basting once lightly with oil if desired to reduce exterior drying, until chicken registers 165 on an instant read thermometer in center near bone.
Let rest a few minutes off heat, serve warm with cilantro.
Recipe Notes
Recipe source: inspired by Serious Eats and Emeril Lagasse