FF,
A couple of recent meals of mine that are very simple ideas for you to add to your meal mix.
One bell pepper, saute for a few mins in a tablespoon of olive oil, add half a large onion, saute a couple more mins, add in a sliced chicken sausage. That's a full-size plate there, a big plate of food. Whole thing ~350 cals. So plenty of room to add a bun, a couple of tortillas, etc.
Chop up a sweet potato, saute for a few minutes in a tablespoon olive oil, add a dozen chopped up brussels sprouts, a chopped up onion, and another tablespoon of olive oil, saute for a few more mins. Whole thing is ~550 cals. Pictured is half of all that plus a poached egg for a total of ~350 cals.