Add quinoa and water to a small saucepan. Bring to a boil, lower to a simmer and allow to cook for 15-20 minutes, uncovered, until all the water has absorbed. Fluff with a fork when finished and allow to rest.
Meanwhile, season chicken with half of the seasoning mixture.
Heat oil over medium-high heat in a larger skillet. Once hot, add chicken.
Cook for 8-12 minutes, until just cooked through. Avoid over stirring to allow the chicken to crisp up just a little.
Add minced garlic and cook 30 seconds before stirring in remaining ingredients (broccoli, tomatoes, corn, pepper flakes, and remaining seasoning mixture). Cook until broccoli is hot throughout, approximately 5-8 minutes.
Remove from heat and stir in quinoa. Add additional salt, pepper, and red pepper flakes to taste. Enjoy!