To see or dream that you are a zombie suggests that you are physically and/or emotionally detached from people and situations that are currently surrounding you. You are feeling out of touch. Alternatively, a zombie means that you are feeling dead inside. You are just going through the motions of daily living.
To dream that you are attacked by zombies indicate that you are feeling overwhelmed by forces beyond your control. You are under tremendous stress in your waking life. Alternatively, the dream represents your fears of being helpless and overpowered.
To see someone as a zombie implies that your feelings for them is dead. You have not emotional attachment towards them.
If you dream that you ate a zombie, then it means that you are holding onto a relationship that is dead. Eating a zombie in your dream may also point to how you distance yourself from others as a way of protecting your own feelings.