Place large saucepan on stovetop over medium heat. Add 2 tablespoons olive oil to saucepan and continue heating pan until oil is hot and shimmery.
When oil is hot, add ½ cup diced white onion and 2 tablespoons minced fresh garlic to saucepan. Stir to incorporate. Sauté ingredients approximately 3 minutes or until softened but not browned.
Once onion and garlic are softened, add 1 tablespoon fresh lemon zest and ½ cup pitted kalamata olives to saucepan. Stir to incorporate. Sauté ingredients 1 minute.
Add ½ cup dry white wine to saucepan. Stir to incorporate, scraping bottom of pan to loosen any onions or garlic that may have stuck to pan. Reduce heat under pan to low and simmer mixture 1 to 2 minutes or until wine has reduced slightly.
When wine has reduced, add 1 tablespoon fresh lemon juice, ¼ cup chicken stock, 1 14-ounce can crushed tomatoes, 2 packed teaspoons light brown sugar, 1 large pinch crushed red pepper flakes, and 1 pinch ground cinnamon. Stir to incorporate.
Simmer mixture over low heat 7 minutes, then taste sauce and add salt and freshly cracked black pepper as desired. Stir to incorporate added ingredients.
When satisfied with flavor of sauce, add cooked meatballs to saucepan. Gently coat meatballs in sauce then let mixture simmer 10 minutes or until meatballs are cooked through.