Season your chicken breasts with 1 tsp garlic powder, salt, and pepper. Heat olive oil in a large skillet over medium-high heat and cook chicken 12-15 minutes per side until internal temperature reaches 165°F, flipping halfway through.
While chicken cooks, prepare all fresh vegetables by dicing bell peppers, cucumber, and red onion into bite-sized pieces. This vegetable prep takes about 10 minutes and makes assembly lightning-fast later.
Transfer cooked chicken to a cutting board and let rest 5 minutes before slicing into bite-sized chunks. Combine lime juice, cumin, and remaining salt and pepper in a small bowl to create a simple vinaigrette.
Toss warm chicken with the lime-cumin dressing, allowing flavors to infuse while the meat cools slightly. This is the perfect time to warm your black beans in a separate pot over low heat.
Assemble your summer meal prep rice bowls family portions by layering cooked rice as the base in each container. Top with dressed chicken, roasted corn, black beans, fresh tomatoes, cucumbers, bell peppers, and red onion.
Divide shredded cheddar cheese and Greek yogurt into small containers to add at mealtime, keeping textures crisp and fresh. Label containers with the current date so you'll remember to use them within five days.