Peel the potatoes, cut them in small cubes and lay them in one layer on a baking sheet lined with parchment paper. Spray with balsamic vinegar and sprinkle with salt and pepper. Roast them until soft (about 20 min at 380 °F (approx. 195 °C) on the convection roast setting).
Cook the couscous following the instructions on the bag.
Add the garbanzo beans to a pan, along with the red wide vinegar, cumin, parsley, 1/2 cup (aprox. 120 ml) water and a pinch of salt. Bring to a boil, then reduce the heat to medium-low, cover and cook until the water evaporates completely (around 10 min).
Chop the zucchini in cubes and add them to a pan with a bit of water. Cook for 7-8 minutes, until soft.
Tzatziki sauce: Place the tofu, garlic, dill, lemon juice, one cucumber and a bit of salt to the food processor and mix until a paste forms. Add water to reach the desired consistency.
Chop the tomatoes, one cucumber, olives and onion.
Assemble the bowl placing the contents in the following order: couscous, sweet potato, garbanzo beans, zucchini, tomatoes, cucumbers, onion, olives, sauce.