Combine the ingredients for the marinade in a bowl.
Add the chicken fillets to a plastic bag and pour the marinade to the bag. Make sure the marinade covered all parts of the chicken. Let it rest for 20-60 minutes (or over night if prefered). (This part can be prepared in advance).
Combine tamari/soy sauce with fiber syrup/honey/agave in a bowl.
When ready to make the chicken preheat the oven to 150 degrees Celsius.
Preheat a nonstick pan with some olive oil over medium heat.
Add the chicken fillets to the hot pan and fry for 2-3 minutes on each side, until golden brown on the surface.
Add the chicken fillets to a oven safe baking pan and bake in the oven for another 15-20 minutes.
Meanwhile prepare the salad by adding mixed green leaves to a bowl.
Add the sliced cucumber, red onion, cut tomatoes and sugar snaps.
When the chicken is ready take it out of the oven and slice into 1/2 cm thick slices.
Add on top of the salad and then crumble feta cheese on top.