Season chicken with 1 teaspoon of salt and 1/4 teaspoon of pepper. Heat 1 tablespoon of oil over medium-high heat in a large heavy lidded pot or dutch oven. Brown the chicken in batches (it browns better if it’s not crowded) for about 2 minutes per side and transfer to a plate.
Add the remaining 2 tablespoons of oil to the pan and add the onion. Cook, stirring occasionally, until softened, about 5 minutes. Add the garlic and cook, stirring, for a minute or so, until fragrant. Turn the heat down to medium and pour in the wine (carefully because it will sputter) and deglaze the pot, stirring and scraping up any browned bits with a wooden spoon.
Add the chicken back to the pot along with the potatoes, pureed tomatoes, tomato paste, water, cinnamon, cinnamon stick, oregano, 1 teaspoon of salt and 1/2 teaspoon of pepper. Bring the stew to a boil and quickly turn the heat down low and gently simmer the stew, covered, for 20 minutes. Add the olives and cook, covered, for another 20-25 minutes, until the potatoes are tender.
Serve the stew hot, in shallow bowls, with fresh chopped parsley sprinkled on top.
Keywords: Greek-style stew with chicken and potatoes in tomato sauce, one-pot chicken and potato stew