In a small bowl whisk all the seasonings together.
Sprinkle both sides the seasoning blend. This will not use all of the seasoning blend, maybe only half. reserve the remaining blend.
Over medium high heat, heat a 10 inch skillet and add the oil.
If using skin on thighs, sear the chicken skin side down for three minutes, flip and sear for another three minutes.
Remove the thighs and set aside.
Add the butter to the skillet and once melted add the onion and chili flakes and cook stirring two minutes.
Add the garlic and cook for one minute.
Add the orzo and stir to combine, and toast for 2 minutes.
Pour in the broth deglaze the pan and scrape any stuck bits from the bottom of the pan with a wooden spoon.
Once boiling, turn the heat to medium-low and add the tomatoes, Dijon mustard, and grated parmesan cheese and remaining seasoning blend. Simmer for 2 minutes.
Add back the chicken and any juices from the plate. Cook covered for ten minutes.
Remove the chicken and stir in the spinach, zest and lemon juice return the chicken, cover and. cook an additional 3 minutes.
Turn off the heat and let sit for 3 to 5 minutes with the heat on.