Fast Food dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Dr. Mıchael Lennox

Any food connects to how you are nurturing and sustaining yourself and fulfilling your own needs. Fast food is nutritionally worthless, and a dream that features this as an image may be asking how well are you taking care of yourself.
Source: Complete Dictionary of Dreams • Author: Dr. Mıchael Lennox

Interpretation 2 — Dream Explanations - Anonymous

See Food and Drive-Through.
Source: Strangest Dream Explanations • Author: Dream Explanations - Anonymous