Is there any chance you're at a kbbq or hotpot restaurant? Because then you get to cook the meal yourself, which is arguably chef-like.
Jokes aside, I see the comparison you're making and it's not a bad one. I'd counter by giving the example of a menu - when you get to a restaurant you're given a menu with text descriptions of the food you can receive from the kitchen. Since this is an analogy and not an exact comparison, let's say that a meal on the menu is like the starting point of the workflow I described.
Based on that you have an idea of what the output will be when you order - but let's say you don't like mushrooms and you prefer your sauce on the side. When you make your order you provide those modifications - this is like inpainting.
Certainly you're not a 'chef', but if the dish you design is both bespoke and previously unimaginable, I'd argue that at the very least you contributed to the creative process and participated in creating something new that matches your internal vision.
Not exactly the same but I don't think it's entirely different.