I'm the same with struggling with lunch as I always have my HE B for brekkie. At the moment, I'm just taking it left overs from the night before or a Mug Shot; just something quick and easy. My partner always has a filled wrap but I just cant justify the syns on it!
Not a massive soup fan so other suggestions would be very welcomed.
I try and mix it up as much as I can otherwise it can get a bit boring. Pasta one day (fry off some onion&garlic, add some bacon and chicken till cooked, stir in some passata and fresh chopped chilli, simmer for about 15 mins, mix in the pasta) Yummy!
Jacket Potato another day with cottage cheese/spaggetti hoops, etc. Salad another day, maybe homemade soup one day, rice/cous cous with sweetcorn, cucumber, etc.