Place dry quinoa in a saucepan over medium heat. Stir until toasted and fragrant, 3 to 5 minutes. Add water, black beans, tomato sauce, onion, chili powder, cumin, salt, pepper, paprika, garlic powder, onion powder, red pepper flakes, and oregano. Bring to a boil. Reduce heat to low; simmer until quinoa is tender, 20 to 25 minutes.
Heat olive oil in a skillet over medium heat. Add chicken; cook and stir until browned on the outside and no longer pink in the center, 6 to 8 minutes.
Fluff cooked quinoa mixture with a fork. Divide among serving bowls. Top with cooked chicken.
