Calories in a Kabocha Squash?

My mom bought a kabocha squash the other day, and I've been eating it all day yesterday, and had the last piece of squash today for breakfast (yeah, I know, I'm strange). I usually microwave my squash with a bit of cling-wrap and a bit of water, and finish it with a touch of salt; so no oil, butter, fats, nada! And, before I cook it I always weigh it to see how many calories I'm consuming.
So here's the thing... I'm a bit skeptical when it comes to the amount of calories the squash actually has. I'm having a hard time believing that it's only 30 calories per 85g serving (raw). Now, each time I have a piece of squash, it usually equates to about less than a pound (so... like 15oz) and CC translates that to 145 calories BUT, I've been logging it as 200 calories because it's hard to believe that something so delicious can be so low in calories.
So, my question to you is... can I fully trust that 85g/30cal is correct for a kabocha squash (raw)?
Am I doing the right thing by over estimating the caloric content of my squash?
Thanks in advanced guys. Hope you can help. :D

I'd say you can probably trust the CC food entry for a single ingredient food. A quick google search for nutritional data on kabocha squash shows those numbers in several places (although the sources for all of these could be the same)

Nutritiondata.com lists butternut squash at 11 calories per oz, so that's about 150 calories for a 15 oz serving. I expect most winter squashes are similar. On the other hand, I doubt you're skewing your numbers that badly by adding an extra 50 calories. That's probably within the margin of error for most people for a day's recording.

Thanks for replying and double checking for me. Also, your honesty is fully appreciated! :D

This squash is pretty much just like a pumpkin so calculating your calories as if you were eating a pumpkin would probably be the way to go!

Oh and you're not weird for eating squash for breakfast... I eat pumpkin EVERY morning for breakfast!! It's delicious and super energizing, don't you think?