Some questions from a Noob

Hi
I`m new to this whole thing, so I need help adjusting my eating habits.

Here is a normal workday for me

Wake up
Sometimes eat an apple or banana on my way to work.
First real meal is lunch then i usually eat about 5 lean flat bread about (35 cal per) + with some kind of chicken sausage slices on.
About 175cal+maybe 50.
So a fairly lean meal.

Sometimes i eat something on my way home from work, usually a baguette of some kind (450-500cal)
But this is not very often.
The days i go to the gym I also drink a protein shake after working out (about 120cal). But this in not every day.
The last meal of the day is dinner. It usually is about 600-1000cal depending on what it is.

This is an example of a day where I have the most meals, usually its only Lunch and dinner.

So here comes the questions.

Is it better to eat a meal with more calories at lunch to even them out a bit?
Should i try to make the meal on my way home a regular thing?
I once heard that getting in some proteins just after you get out of bed is a good thing in helping you loose weight.
Should i drink a protein shake before I leave home in the morning?

I`m usually not any good at counting calories in the weekends (sat, sun), and usually there is a bag (or two) of chips during these days.
How much does this mess my weekdays?

So what do you say guys!