I think the hard part for me about doing something like that is not forgoing those things, it's figuring out what to eat instead. Any tips?
At lunch I usually have chicken breast or fish and some carbs (usually rice, or baked potatoes, rarely some simpla pasta). Salads, carrots, tomatoes, cucumbers, cooked vegetables, home made soups.
Then I have smaller meals with more fruits, or yoggurt with less fat. Or soups.
But if cheakpeas your only food source, 7/8 seems achievable. Ask the "carnivorses" that says plant left them hungry :-p