First preheat your oven to 180°, make the marinade in the meantime. Add mustard, oil, and garlic into a bowl mix well. Rub the chicken with this marinade, leave it at least for 30 minutes or more if you like. Add the chicken into a baking dish pour over marinade. Place in oven, cook until just cooked as you dont want it to turn out dry.
Slice the onions and red peppers cook them in a little oil to soften them. In the meantime boil water for rice, add stock cube. Simmer until just cooked, take of stove add into serving bowl
Quarter the lemon, drizzle juice over peppers. It should almost taste like a sweet and sour dish. Remove meat from pan add to peppers.Serve with rice.
