Need Healthier Foods

Before martial arts I always go home so that I can get some food in my body, but I wonder if my performance during practice would be better if I were to eat healthier. Most of the time I would eat some pizza with chips or 2 chicken patties with some chips.
The thing that has got me thinking is the food I eat. I know that I need to eat before practice but I also know that the food that I'm eating isn't food that is good for workouts. The problem I face is not knowing what to make to eat. When I get home I only have 45 minutes at the most. So I have to make the food and eat it or take it with me within those 45 minutes. Being that it's my first time coming home for the day I usually try to get some stuff ready for the next day.
I have learned to get in the house, take out thinfs for the next day, put my clothes away and make something to eat in a fast minute but I need some ideas on healthier things to eat.
During practice I can get a bit
tired but it's more thay I get sore and my arms and legs start to feel like they're going to fall off. I'm not sure if there are any foods that I cam eat that will be more beneficial for my body when it comes to working out, but it's something to look into.