Combine the crushed red pepper and ground turmeric in large bowl and stir in 2 tablespoons of hot water and let stand for 5 minutes. Add the greek yogurt, olive oil, red wine vinegar, tomato paste, 2 teaspoons salt, and 1 teaspoon black pepper to spice mixture in bowl; whisk to combine. Stir in garlic and lemon juice, then chicken. Cover and chill for AT LEAST 1 hour. I do for 4 minimum and yes you could do overnight if you prefer
Prepare the grill over medium-high heat. Thread chicken pieces on skewers, dividing equally.
Discard marinade in bowl. Sprinkle each skewer with salt and pepper.
Grill chicken until golden brown and cooked through, turning skewers occasionally, 10 to 12 minutes total. Transfer skewers to platter. Serve with serving suggestions and extra lemon wedges
Notes
Hot tip - if you put a few cups of greek yogurt in some cheesecloth and let the moisture drain off, you’re left with a thick greek yogurt that is excellent for dipping these skewers in!