Lazy Panda is great. I found them on Facebook and used Lineman to order and the food was good. It was not fantastic but it was something that reminded me of American style Chinese Food and at reasonable prices. I liked the General Zao's Chicken.

Here is an online review. But, give them a try. They are good!

http://www.khaosodenglish.com/life/food/2019/07/24/we-tried-the-latest-american-chinese-takeout-in-bangkok

I order through LineMan and they deliver all the way to any area you want. Great service and great food. For Lineman, I think the limit is 1000 thb so you won't get a party tray but I get 4 good meals out if it for a small group and every American that has it, loves it.