My first question would be what are your goals?
I know it may be obvious but I don’t want to make any assumptions here.

Lets say the you average 2400 cals/day and you want to gain weight. It is simply eat more than you are burning and you will get bigger, eat a lot more and you will get a lot bigger (not a good thing).
If you are keeping track of everything, which it looks like you are, just start to carefully increase your daily total in through clean foods. up 100-150 cals/day for a week or two. See how you feel. If nothing happens, and you’re feeling weaker then up it a little more. Any changes should be in moderation.
Nutrition can be as complicated or as simple as you want it to be.

You need carbs.
Eat rice, potatoes, sweet potatoes, fruit.

Aaron,

We shy away from giving to much nutrition advice for a few reasons:

1. You must be a nutritionist or dietician to give specific advice, and I am the only one allowed to, as I am the only nutritionist on staff.
2. People seem to over complicate it.

With that said, here is a quick set of suggestions:

get at least 1 gram of protein per pound of body weight
if you want to gain weight, start at about 13 calories per pound
fill in the blanks after the protein with healthy carbs and fat
more carbs on training day, less on off days

good choices:

rice
sweet potato
potato
fruit

olive oil
nuts
nut butter
avocado

Watch your waistline, if your abs are less visible, cut a small amount of calories (maybe 100 or so for a week) and see if that works. If it does not, cut a little more.

If you are not gaining/recovering, add a little more.

As far as supplements go, the VAST majority of them are 100% useless so we do not suggest many.

Other than that, I don’t suggest much.