1Preheat oven to 425F. Grab 4 skin-on bone-in chicken thighs, dab dry with paper towel, and place in an oven-safe dish. Let chicken come to room temperature for about 30 minutes.
2Drizzle 1 tbsp avocado oil, 1 tbsp dijon mustard, juice of 1 lemon, a couple pinches of salt, 2 tbsp onion powder, 1 tbsp dried dill, 1 tbsp sweet paprika, 1/2 tsp cayenne pepper, and 1/2 tbsp baking powder over chicken. Mix well.
3Bake chicken for 35 minutes at 425F. Remove chicken, spoon over the juices at the bottom of the dish and bake for another 5 minutes.
4Make the sauce by processing 4 tbsp plain thick Greek yogurt (or sour cream), 3 tbsp mayo, juice of 1 large lemon, a handful of fresh dill, 1 tsp onion powder, 1/2 tsp Aleppo (or any chili pepper), and a pinch or two of salt. Taste and adjust as needed.
5Serve the chicken with the sauce. Add sides as desired.