Pat the chicken breast dry and season with smoked paprika, garlic powder, salt, and black pepper.
Heat olive oil in a large non-stick skillet over medium-high heat. Add the chicken and cook for 8-10 minutes, stirring occasionally, until the internal temperature reaches 165°F (74°C).
In a small mixing bowl, combine the non-fat Greek yogurt with the dry ranch seasoning. Add 1-2 teaspoons of water if needed to reach a drizzling consistency.
Prepare four meal prep containers by placing 0.5 cup of cooked brown rice in the base of each.
Distribute the cooked chicken, black beans, corn, cherry tomatoes, and red onion evenly among the four containers.
Drizzle each bowl with 2 tablespoons of sugar-free BBQ sauce.
Top each serving with the Greek yogurt ranch dressing and garnish with fresh cilantro before sealing.