In a large resealable plastic bag, combine the flour, salt, and pepper to taste. Toss the chicken in the bag, seal, and shake to coat.
In a large sauté pan over medium heat, warm the oil. Cook the chicken until golden brown on all sides, turning the chicken often so that it browns evenly, 5 to 7 minutes per side. Push the drumsticks aside, add the garlic, bay leaf, and rosemary, reduce the heat slightly, and cook, stirring frequently, until the garlic is fragrant, 1 to 3 minutes.
Carefully stir the tomato paste into the oil in the sauté pan and cook, stirring constantly, for 1 minute. Add the wine, increase the heat, and boil until the liquid is reduced slightly, about 2 minutes. Pour in the broth, reduce the heat to low, partially cover the pan, and gently simmer, occasionally turning the drumsticks, until the chicken is tender and the sauce has thickened, 40 to 45 minutes. Taste and adjust the amount of salt and pepper to taste. Remove and discard the bay leaf before serving.