Can't gain or lose weight - should I eat more?

[Sven7]

The 'supposed' 4000 maintenance came from a nutrition class where we calculated the normal expenditure by weight/height. I'm 6'2 180 pounds, 23 years old. As for BF %, I have no idea. I can slightly see some upper abs, but I disproportionately keep more fat on my stomach, the rest of my body is pretty lean. In fact, I've got a slight pinchable pouch right below my belly button that drops off completely after that.

yesterday I had-
2 protein shakes, so 540 calories of milk + 240 calories protein powder.
2 chicken breasts = about 300 calories
Can of chicken noodle soup that I put the chicken into - 250 calories
provolone slice - 90
broccoli - ???
= 1420

other days I occasionally have a re-feed meal where I eat a larger portion of food with a decent amount of carbs.

I have a fairly standard 6 day split. Back, chest, shoulders+traps, legs, arms, off day, repeat.

[gbrice75]

yesterday I had-
2 protein shakes, so 540 calories of milk + 240 calories protein powder.
2 chicken breasts = about 300 calories
Can of chicken noodle soup that I put the chicken into - 250 calories
provolone slice - 90
broccoli - ???
= 1420

No offense, but this diet stinks!!! You obviously won't see any gains with a diet like this, so I won't even go into that - at 1420 calories you're obviously not trying to add muscle. As for not losing weight - depending on what your TDEE really is (and if it's truly 4000, you need to rethink what you're doing ASAP), you could very well have caused a 'shutdown'... i.e. an extremely slowed metabolism. How long have you been eating this way?

A sudden huge bump in calories is not the answer - you'll likely put on bodyfat. A gradual increase is the way to go... a couple hundred calories per week until you're at a target number - either a bit under or a bit over maintenance, depending on the primary goal.