Heat the oil in a medium sized pot over medium heat. When the oil is shimmering, add the onion. Cook, stirring frequently, for 5 minutes, or until the onion is soft and clear. Add the quinoa, broth, tomato sauce and paste, paprika, oregano, salt, and chickpeas to the pot. Bring to a boil.
Reduce the heat to low, cover, and simmer for 13-15 minutes, or until the quinoa has absorbed all of the cooking liquid. Fluff the quinoa with a fork and allow it to sit, covered, for 5 minutes. Stir in vinegar and crushed red pepper flakes to taste, adjust the other seasonings as needed, and fold in some fresh herbs, if you like.