Try cooking meals in batches on your days off. Keep in the frig or freeze small portions. Planning meals makes it so much easier on a tight schedule. I know this seems like lame advice, but it is true.
I found this You Tuber (no personal connection, just selected one with many views). Of course, modify for gluten free and your other food intolerances.
You can pack some great lunches too.
Happy meal prepping or You Tube surfing!
I have a ton of issues and make nut butters and eat them, it is very dense calorie wise (190-220 calories for 2tbsp). I blend into shakes, mix with coconut and almond flour for nut meal porridge. I do mostly soft foods for ease of digestion. I also use vegan protein powders in my shakes/porridge. I used to use a blendtec or a food processor but invested in a stone mill 4-5 years ago. Some nuts can be made into butters easy like pecan, macadamia, walnuts. Just light roast if raw 270-300F for 18-20 mins then process until smooth in 8-16oz batches and store in a jar. Nuts.com might be good for you. I use other sources as I have issues with peanuts, corn also which they often have CC with.
Avocados are also a nice source of healthy fats and calorie dense...very versatile from spreads, spoon, shakes, and even make nicecream and mousse out of them.
I follow a keto based diet myself, but do not eat much meat or egg yolks (issues with breaking them down) so I live on egg whites, nuts, seeds, avocados ,and leafy green veggies.