Chop vegetables and place in a casserole. Drizzle with olive oil, balsamic vinegar, and olive brine. Roast at 200°C for 20-30 minutes.
Grill chicken breast in a pan on medium-high heat for 6-9 minutes until browned (internal temp: 165°C).
In the last 5 minutes of roasting, place chicken on top of vegetables, baste, and return to oven. Remove immediately to prevent drying.
Grill instructions
Heat cooking oil in a grill pan. Add vegetables and cook on medium-high.
Add chicken breast to one side and grill for 8 minutes on each side (look for white albumen to indicate doneness).
Remove chicken and continue grilling vegetables until cooked. Drizzle the olive oil, balsamic vinegar, and olive brine over the vegetables and cook until the liquid is absorbed for an additional five minutes.