Place water and sea salt in a large cooking pot.
Place over medium heat and bring to a boil. Remove from heat.
Pat the chicken dry with paper towels. (A wet chicken will cause the oil to splatter while the chicken is sautéing.)
Add cinnamon, Kosher salt and pepper to a small bowl. Mix. Rub chicken pieces on all sides with the seasoning.
Pour olive oil in a large, nonreactive, deep skillet.
Place over high heat.
When oil is hot and shimmering, add the chicken to the oil. Work in 2 batches, if necessary. Do not crowd - this will cause the chicken to steam rather than brown. Brown for about 4 to 5 minutes.
Turn the pieces using a metal spatula (they may stick to the pan). Brown this side for about 4 to 5 minutes
Remove the pieces to a paper towel-covered plate to drain when they are well-browned on all sides. Leave pan on stove. Lower heat to medium-high.
Add the onions and 3 minced garlic cloves. Cook for about 3 minutes, stirring constantly, until the onions have softened and are a rich golden brown.
Add about 1/2 cup of the preboiled water. Scrape the bottom of the pan with a spatula or spoon to deglaze the pan, loosening any particles stuck on the bottom.
Cook and scrape until water has evaporated.
Add remaining 1 1/2 cups of water, tomato paste, Italian seasoning and remaining 2 minced garlic cloves. Return chicken to the pan. The liquid should cover about 3/4 of the chicken pieces.
Cover the pot and simmer over medium-high heat for about 30 to 40 minutes, or until the chicken is tender and thoroughly cooked. If the sauce becomes too thick, it can be thinned with a little more water.
Season the finished sauce with kosher salt and pepper to taste.
Serve over prepared orzo, sprinkled with Mizritha cheese.