Pronouns replace nouns, and food is a noun category. We use pronouns to refer to people, places, or things *after* we've already mentioned them.
Instead of using a pronoun for food, we use:
* Demonstrative pronouns: This, that, these, those (e.g., "This pie is delicious.")
* Possessive pronouns: My, your, his, her, its, our, their (e.g., "This is my favorite food.")
* Other nouns: We can use the name of the food itself or a synonym (e.g., "The pizza was excellent." "I love Italian cuisine.")
Let me know if you have any other pronoun questions!