In a medium saucepan, combine the rinsed quinoa and chicken broth. Bring to a vigorous boil over medium-high heat, then reduce the heat to low. Cover the saucepan and let it simmer for about 15 minutes, or until the quinoa is tender and all the liquid has been absorbed. Once cooked, fluff the quinoa gently with a fork and set it aside.
In a large skillet, heat the olive oil over medium heat. Carefully add the diced chicken pieces, seasoning them with a generous pinch of salt, black pepper, ground cumin, smoked paprika, chili powder, and cayenne pepper (if using). Cook the chicken for about 7-10 minutes, stirring occasionally, until it is browned on the outside and fully cooked through.
Incorporate the chopped red bell pepper and corn into the skillet. Continue to sauté for an additional 3-4 minutes until the bell pepper has softened.
Add the cooked quinoa and black beans to the skillet, gently stirring to combine all ingredients. Cook for another 2-3 minutes, allowing everything to heat through and the flavors to meld.
Remove the skillet from the heat and drizzle with fresh lime juice. Toss in a sprinkle of chopped cilantro for a burst of freshness.
Serve the dish hot, topping each portion with luscious slices of avocado and a sprinkle of extra cilantro if desired for added color and flavor.
Notes
Adjust the cayenne pepper to taste for desired spiciness.