Ghost cant read his hunger signals unless hes starving.
He grew up in a no snacks, eat what's served to you during meals kind of family. It helped keep the food budget controlled, and each Friday either Simon or Tommy got to help Ma with supper. He learned from an early age to ignore his hunger, that subtle shift that indicates it's time to eat. Simon felt hungry, sure, but only when his stomach would twist in pain and his hands would feel weak.
Of course, you notice, how could you not? He always insists he isn't hungry when you ask, but ends up eating three servings at dinner when the hunger finally registers.
So you take matters into your own hands.
A plate of rice, steak, and veggies lands on Ghost's desk. It smells delicious, enticing where it sits atop the papers he was trying to work on. You point at it sternly "Eat, lieutenant. Now."
Ghost opens his mouth to tell you he's not hungry, which is honestly the truth, and he doesn't want you wasting food on him. You cut him off first "If you don't eat it I'm throwing it out."
That seems to work. Gets the panicked kid in Ghost's chest's attention. He grabs the plate and takes a large forkful of rice. Then takes another, and another until the plate is clean in under five minutes, his hunger now making itself very known once he's eaten.
Another plate is set in front of him, and Ghost looks up to see your satisfied smile. "I figured you'd be hungry. Here, eat, I brought my own." As you sit down with your own lunch box.
From there it's routine.
You show up with delicious food, and ghost finally realizes just how hungry he is. Sharing food with each other. He's shocked to find he isn't so ravenous at dinner, isn't shoveling food in his mouth with shaky hands and a sudden weakness. It's...really good.
On the weekends, when he's sitting in an empty apartment, Ghost will think It's time for me to eat even when he's not hungry, used to your little routine. He cooks food, and decides he should repay the favor, learning how to make that dessert you always go on about, something to show how much he appreciates the fact he hasn't felt hunger pains all week.
