Sounds like a great idea for an app. What have you created so far and what are you having trouble with? You’ll most likely need to find an API, possibly a paid one, that provides the data for each type of food. So you’ll need to learn how to parse API data which I cover in a tutorial here: API JSON Tutorial (Video).
Beyond that, setting up the UI, designing the user experience, etc, etc… it helps if you can ask a specific question about a specific step in the process. And be sure to include screenshots of your blocks and if possible a link to the project.
Good luck!