Season the cubed chicken breast with garlic powder, smoked paprika, salt, and black pepper.
Heat a large non-stick skillet over medium-high heat and cook the chicken for 8 to 10 minutes or until the internal temperature reaches 165F (74C).
In a small mixing bowl, whisk together the non-fat Greek yogurt, sugar-free BBQ sauce, and dry ranch seasoning to create the dressing.
Distribute 1/2 cup of cooked brown rice into four separate bowls or meal prep containers.
Evenly divide the cooked chicken, broccoli, cherry tomatoes, black beans, and corn among the four bowls.
Drizzle the BBQ ranch dressing over each bowl or store in small containers on the side.
Garnish with fresh parsley or green onions if desired and serve immediately or refrigerate for up to 4 days.