good for lunches-
beans on toast (with lots to drink to make up for salt etc.),
homemade ricepud+fruit (canned if in a rush-orange segments are fine just keep an eye out, my daughter sucks the juice then spits the rest out)
scrambled egg/omlette, you can flavour these eg add some fish to introduce new ideas gradually. can also do hard boiled egg or egg mayo sarnie
really chunky soups are good, eg big chunks of veg+a bit of pasta, my daughter liked cauliflower cheese (if homemade not too unhealthy). also handy to have frozen veg eg broccoli, so have sticks of that then add a sauce eg a tomato based one
out and about-tuna+nat yog. instead of mayo sarnie or pitta
you can do buffet style finger foods like wedges of cheese, cucumber, toast etc
i'd avoid the mini fromage frais as they add tons of sugar, but you can buy a big tub of natural fatty greek yoghurt and give say 5 or 6 spoons as one portion
if giving any fruit juice, water it down 5 part water to 1 part juice otherwise things get very messy
melon is always good
you dont have to do a savoury main+sweet pud every day, eg rice pud with fruit one day is nutritious enough as a meal + helps teach them not to always expect something sweet at the end of a meal