Line rimmed baking sheet with parchment paper. Transfer chicken in marinade to prepared baking sheet; discard remaining marinade. Bake in centre of oven for 15 minutes; increase oven to broil.
This is an economical way to stretch one tray of chicken breasts to feed six. In large frying pan, heat oil over medium heat; cook onions and carrot for 5 minutes, stirring, until golden.