Hi Amy, I make Pad Thai all the time for DH. It's addictive, isn't it?
The eggs, shrimp, green onions, and sprouts should be fine. I think you'd need to be careful with the rice noodles and chopped peanuts, but they're OK too in controlled portions. It's the sauce that's the killer and I'm just not sure what you could do to fix it. I either use a jarred sauce that's loaded with sugar or make my own with a recipe based on ketchup, which is also loaded with sugar.
Maybe find a sauce recipe and try some substitutions like Splenda for sugar and low-sodium soy sauce?
Good luck and let us know if you come up with a winner! (then I might even eat it!)