To dream that you are eating alone, signifies loss, loneliness, and depression. You may feel rejected, excluded, and cut off from social/family ties. Eating may be a replacement for companionship and provide a form of comfort. Alternatively, eating alone reflects independent needs. Also consider the pun, "what's eating you up?" in reference to anxiety that you may be feeling.
To dream that you are eating with others, signifies harmony, intimacy, merriness, prosperous undertakings, personal gain, and/or joyous spirits.
To dream that you are overeating or not eating enough, signifies a lack of spirituality and fulfillment in your waking life. Food can represent love, friendship, ambition, sex or pleasure in your life. Thus, food is a metaphor to fulfill and gratify your hunger for love and desires. If you are refusing to eat, then it indicates that you want to be more independent and not rely on others so much. If you dream that you are a picky eater, than it indicates that you are holding back something. If you are currently dieting in your waking life, then the dream may serve to compensate for the sustenance that you are lacking.
To dream that someone clears away the food before you finish eating, foretells that you will have problems and issues from those beneath you or dependent upon you.
Here ya go. from http://www.dreammoods.com/dreamdictionary/