In a bowl (I used the yogurt container) mix together the 4th ingredient (olive oil) through the 12th ingredient, tomato paste. If adding cinnamon and cayenne pepper, add it now.
In a bowl (or baggie), place you chicken that has been cut into cubes or chunks. Pour the sauce over the chicken and mix.
Um, I forgot the tomato paste.
Once your chicken is coated, allow to marinate. Aim for a couple of hours or overnight.
On a parchment lined baking sheet, place your zucchini and onions. Drizzle with a little olive oil and salt and pepper.
Place chicken on top. Bake at 375 degrees for at least 25 minutes. if desired, when your chicken is cooked through, turn on low broil for a couple of minutes. Don't walk away. This will give it a little char.
Make the yogurt sauce. Mix the yogurt sauce ingredients together.
Serve as desired.