Prepare the sauce: in a container place all the ingredients and whisk well to combine.
Transfer the sauce in a sauce pan and bring to boil at medium heat, whisking.
When the sauce is bubbling and starts thickening, reduce the heat to minimum and simmer, stirring, for 1 minute. Set it apart.
Prepare all the vegetables: cut all of them in small pieces, toddler bites.
Do the same with the chicken. The small size is not only toddler friendly but will reduce the cooking time ;-)
In a big bowl add the vegetables and 1 Tbsp of sesame oil. Mix. Pour 1/4 of the Teriyaki sauce. Mix.
In another bowl add the chicken and pour 1/4 of the Teriyaki sauce on top and mix.
Place the vegetable/chicken mix on a parchment paper on a baking sheet and try to spread in one layer in order to cook everything evenly.
Bake in preheated oven at 400F/180C for 15 minutes.
Remove from the oven and add half of the remaining Teriyaki sauce.
Bake for additional 5 minutes (or until the chicken is cooked) and add other 5 minutes in broil mode to give a nice golden top.
While the chicken is baking you can prepare the CousCous.
In a medium pan add the water and bring it to boil.
When the water is boiling, turn the heat off, add the couscous and the olive oil, stir, cover with a lid and let is cook for 5/6 minutes (easy, don't you think??)
Serve the Chicken with veggies on a bed of couscous, yum!