01 -
Preheat the oven to 200°C and coat a large baking dish with nonstick cooking spray.
02 -
Season the chicken breasts with salt and pepper and place them in the prepared baking dish.
03 -
Distribute the chopped bell peppers and red onions evenly over the chicken.
04 -
Pour the tzatziki sauce uniformly over all ingredients in the baking dish.
05 -
Sprinkle the crumbled feta cheese and dried oregano over the entire dish.
06 -
Cover with aluminum foil and bake for 30 minutes. Remove foil and continue baking for another 10-15 minutes until chicken reaches an internal temperature of 74°C.