In a large pot or Dutch oven, heat olive oil over medium heat. Add the diced chicken, Mediterranean blend spices, chopped onion, and minced garlic. Cook for 3-5 minutes until the chicken is lightly browned.
Stir in the rinsed quinoa, diced bell pepper, kidney beans, corn, diced tomatoes (with juices), and chicken broth.
Sprinkle in the cumin, salt, black pepper, and paprika. Stir until everything is well combined.
Bring the mixture to a boil over medium-high heat. Once boiling, reduce the heat to low, cover the pot, and let it simmer for about 15 minutes, or until the quinoa is fluffy and the chicken is fully cooked. Check occasionally to prevent sticking.
After 15 minutes, remove the pot from heat and let it sit for another 5 minutes, covered.
Serve hot, topped with sliced avocado and a sprinkle of fresh herbs for garnish.