Hi Kale4life1!
When I was in college (back in the neolithic era), I too played football as defensive tackle and have an endomorphic body type.
With sports and being a full time student with a full time job, I know just how tough it can be timewise and moneywise.
I really empathize with your challenge.
Here a are a few quick low-carb snacks to put in that cooler for someone on-the-go almost every day...
String Cheese
Pepperoni Sticks
Nuts
Pork Rinds
Cheese
Hard Boiled Eggs
Lunch Meat with cheese and mustard/mayo wrapped in lettuce leaves
Avocados, small or medium (1 per serving)
Tomatoes, small or medium (1 per serving)
Plain green salads with low-carb dressing
With any packaged foods, ALWAYS read the nutrition labels for carb counts and ingredients.
I also strongly recommend that you also drink at least 1/2 gallon of water per day for general health.
Playing football on a low-carb diet calls for a LOT of water!
And for those days when you may have some time, you can prepare a few meals, pre-pack them into serving sizes and keep in the fridge for grab-n-go. See Doug's book for some easy recipes to get you started.