Start by cutting the chicken in half and clean it well by removing all the excess fat; after that, set it aside.
Into a bowl, add the salt, the sweet paprika, the garlic powder, the oregano and the black pepper to taste, mix all the ingredients very well.
Next, into a food processor or blender, add the onions cut in halves, the bell peppers chopped into smaller pieces, the tomatoes chopped into smaller pieces, parsley to taste, the olive oil and the garlic cloves, process all the ingredients very well into a paste.
Once you’ve done that, spread all the dry seasoning we made all over the chicken as well as on its insides.
Add 4 tablespoons of the paste we’ve processed, spreading it all over the chicken and set it aside.
Now into a bowl, add the zucchini chopped into round slices, the potatoes cut into smaller pieces, the carrot chopped into round slices and 5 tablespoons of the seasoning past, add 1 pinch of salt and mix all the ingredients very well.
Transfer the vegetables to a large baking sheet, place the oven grill on top of this baking sheet and put the chicken over this grill.
Cover the chicken with aluminum foil.
Roast it in a preheated oven at 190°C (374°F) for an hour and a half. Roasting time may vary depending on the power of your oven.
After this indicated time, remove the chicken from the oven and spread the rest of the seasoning paste all over it. Then put it back in the oven, this time without the foil, and leave it there for about 15 minutes or until golden brown.
Serve.