Preheat the oven to 200 degrees Celsius.
In a measuring jug, add the juice of a lemon, the grated garlic, parsley, oregano and crumbled light feta cheese.
Season with salt and pepper and mix well.
Line a baking tin with tin foil.
In a large bowl, add the baby peppers (deseeded), whole cherry tomatoes, roughly chopped red onion and halved baby tomatoes.
Spray well with one kcal spray and season well with salt and pepper.
Add in some oregano and parsley and mix well.
Pour veg into the baking tin and spread evenly.
Nestle the chicken breasts in between the veg.
Pour the marinade over the chicken.
Slice up a lemon and add to the baking dish.
Bake in the oven for about 35-40 minutes turning halfway through.
Divide into 4 portions and serve.