Marinate the chicken: Add all of the chicken marinade ingredients to a medium bowl and whisk together to combine. Add all of the chicken thigh pieces to the marinade, toss to fully coat and let sit for 30 minutes on the counter or 1 hour in the refrigerator.
Make the sesame brittle
Preheat the oven to 275F and line a small baking sheet with parchment paper. To a bowl add the sesame seeds, honey, olive oil, salt, pepper and garlic powder and mix until combined. Spread on the baking sheet and bake for 15-20 minutes (or could take 25-30) or until crispy and golden brown. Set aside to cool.
For the creamy green sauce
To a small frying pan over medium heat, toast the cumin seeds until fragrant, about 3-4 minutes.
To a food processor, add the garlic and jalapeno and pulse a few times until you have fine pieces.
Next add the toasted cumin seeds, cilantro, parsley, chili flakes and salt. Pulse until everything is finely chopped. On low speed, drizzle in the olive oil until combined. Taste and adjust seasoning with salt or chili flakes for more heat.
Let the green sauce sit in the refrigerator.
Grill the chicken
Thread the marinated chicken onto the skewers, allowing any excess marinade to drip off, dividing evenly between the skewers.
On the outdoor grill - Heat the grill to medium-high heat, about 400F.Oil the grill well and when heated, place the skewers on the grill and cook, turning occasionally, for about 10-15 minutes or until cooked through (internal temperature reached 165F) and well browned. Remove from the grill and let rest for 5 minutes.
On the grill pan / oven - Preheat the oven to 375F. When the oven is preheated, heat the grill pan to medium-high heat. Oil the grill pan well and when heated, place the skewers on the grill and cook 4-5 minutes, flip, and cook 4-5 more minutes (you may have to do these in batches). Place on a baking sheet to finish cooking in the oven, until cooked through (internal temperature reached 165F).
Assemble the dish
Break the sesame brittle into pieces.
Once Bthe chicken has rested, mix together the green herby sauce with the Greek yogurt and spread the sauce on a platter.
Then place the chicken skewers on top. Garnish with pieces of sesame brittle on top and beside the skewers, add fresh herbs and enjoy.