I'll be honest, I've struggled not having pasta and rice because they were my go-to foods but it can be done. My typical day (and it's certainly not perfect) may give you some ideas:
Breakfast:
Two poached eggs on two slices of wholemeal bread (I now class wholemeal bread as a treat!)
Sometimes have bacon
Sometimes the eggs are scrambled
Also do omelettes and no bread, which is much better 🙂
Lunch:
Salad - cucumber, lettuce, tomatoes, celery, olives
Fish - tinned salmon or mackerel
Meat - chicken mostly or pork steaks
Full Fat Greek yogurt with strawberries (I can eat this at any time of the day 😉)
Dinner:
Meat - again chicken mainly with loads of veg but no potatoes or parsnips just broccoli, sprouts, cauliflower, spinach or carrots
Sometimes i just pick on carrot sticks and hummus - depends if I'm hungry
Soup - tomato or chicken usually
Casseroles - slow cooked
I work from home so will often swap dinner for lunch as I don't like eating a big meal too late. I don't snack in between meals but I do drink lashings of tea instead!!
I'm off out for tea tonight, so that will be interesting attempting to navigate my way around chips, chips and more chips on pub menus.