How can I increase my calories without increasing carbs, fat or protein?

Well I don't know how you got 121 carbs from 872 calories, but maybe you should change those foods instead. Most foods rich in carbs are also high in calories? So for the carbs I would recommend whole wheat products... but from that meal plan, you need something that can have protein and a small amount of fat, but no carbs... I'd go for healthy fats like olive, avocado, nuts, etc. I'd check how much fat is in a serving, but they tend to be very filling. Also, instead of reducing carbs, you should exercise more because that is what you need to exercise.

You can increase your milk intake. Or get in a protein powder. Nuts and seeds are an excellent way to go too... they'll add on calories quick, plus they are good for you (in a reasonable quantity). And really consider weight training. Muscle is what's going to burn that fat and keep you looking good. There is a chance you'll get to 150, but still have lots of fat.. that will make you what is called 'skinny fat'.

you can loose weight on 1500 calries but leave the fat to 10 % and increase the fiber content for filling full in beans and whole vegetables and fruits that are whole.

carbs are good for you and would be better for you than extra protein but the calories are from carbs protein and fat and fat has 9 cal per unit instead of 4 like the carbs and protein.

and the best idea is to add exercise to that it will help also.fifteen minutes a day times two.

The only thing other than carbs, fat, and protein that contains calories is alcohol... so I'd recommend increasing carbs, fat and protein up to the higher end of your desired range in order to get enough calories.

Chew gum. Sometimes just chewing something with negligible calories inside is all it takes. If you're able to handle it, chew a part of gum for one hour and also drop 11 calories. Remember to opt for the sugar-free variety.

You have lots of space yet on the protein, so nuts or beans would be an option.

Also, though it would increase your carbs some, anything really high in fibre is an option as well.

You can't do it; anything with calories is going to have at least one of them.

You're at the low end of the protein scale, so try a high protein, low fat food.

Looks like you've got a lot of wiggle room on protein and a little on fats. I would think maybe some lean meat, like boneless skinless chicken breast or lean fish (as opposed to oily fatty fish like salmon)

Another option would be skim milk mozzarella cheese - like fat free string cheese or some other lowfat cheese.

You might even be able to have some almonds...

Like it or loathe that, horseradish, which comes from a similar family as wasabi, can actually help you dissolve your fat and stop hunger pangs, claim researchers from your University of Copenhagen. Spread a little on your sarnies, instead of one's usual ketchup, for a slimming effect.

Good luck with this plan, but I think you're make a serious mistake by eating so many carbs. I'd include more lean protein and fewer carbs.