diet help

so my boyfriend is really unhealthy. he has some health issues that prevent him from exercising and all that but i really want to help him. he’s prediabetic and insulin resistant so his cells don’t absorb sugars and it basically works like a trans fat for his body. he also has asthma so he can’t do a lot of exercising.

his diet is pretty sugar free but it’s really high in fats (lots of fast food and processed foods) and i was wondering if anyone knew of some healthier meals that he could make. he does hate cooking so they’ve gotta be pretty easy to make as well. if this doesn’t make sense let me know because it’s 3:30 am right now.