Preheat the oven to 425 degrees F. Line a baking sheet with foil.
Heat the olive oil in a large skillet over medium heat. Add the onions, thyme, sage, 1 teaspoon salt and 1/2 teaspoon pepper. Cook, stirring often, until the onions are softened, about 10 minutes. Add the garlic and cook 1 minute more. Add the tomato paste and cook for 1 minute, stirring to incorporate. Stir in the Worcestershire. Remove from the heat and allow to cool.
Add the panko to a large mixing bowl and pour over the chicken broth so the breadcrumbs soak up the liquid. Add the turkey, eggs, 2 teaspoons salt, 1/2 teaspoon pepper and the cooled onion mixture and mix well with your hands until well combined. Form the mixture into a 10-by-5-inch loaf on the foil-lined baking sheet.
Put the meatloaf in the oven and reduce the oven temperature to 350 degrees F. Bake until a thermometer inserted in the center of the loaf reads 165 degrees F, at least 1 hour. Let cool slightly before slicing and serving.