@Hanbu
Why do you think you're eating too much?
B mushroom, fried egg, spinach, quern bacon vlc
This looks fine to me - perfect low carb bacon - although I'm not sure what 'quern bacon vlc' means? Is it 'Quorn bacon very low calorie'?!
L tuna fish cakes, lettuce spinach 1/2 avocado, cucumber, vinaigrette
Again perfect - although I hope your vinaigrette was home-made, with oil, and didn't have any sugar/sweeteners in it?
D cauliflower, broccoli, grated cheese, mashed celeriac
This is OK, although there's no protein and not very much fat here - why is that?
Overall, unless you're piling your plate high, this doesn't look too bad in terms of quantities - why are you concerned?