Are you overcooking the chicken? Are you using enough fluid for the rice? And what are you using to make the rice?
99% of people simply can NOT cook worth a shit. I don't know when this became such a difficult thing. Almost every meathead that I have known cooks their chicken and/or beef until and is jerky. If it's that miserable, it may be overcooked. I actually had a friend a few years back that was in his late 20s ask me how to cook chicken... Apparently his mom had been cooking it for him for the entire time he'd been alive. I honestly didn't know how to react...
As for rice, I am currently eating 500-900g carbs daily, (depending on the day) and the only way I can get through those 900g days is the fact that I use chicken and beef bone broth (1:1 ratio to the water) to make my rice. I also use about 20% more fluid than the recipe calls for.
Just a couple of things that help me.
If it's just a matter of having a hard time shoveling in the volume of food...blender. Either blend protein and oats, or add additional broth and make the food into soup. Those aren't my preference, but they both work well when I'm pressed for time.