i share a similar diet and am still losing. i usually have an omelette for breakfast, peanutbutter around one-ish, and a meat-based dinner. at some point during the day, i try and work in some lettuce, or green beans. i cook most of my foods with olive oil, and drink somewhere between 70-100 oz of water (probably not enough) and a few cups of herbal or green tea.

Especially considering your excersise, i would be surprised if you werent losing a pound every two weeks, at least. if not, maybe try upping the water and yeah, the veggies too. as everyone says though, make sure to measure yourself. (i only did just yesterday, because i figure im boud to plateau soon. )
anyways, let us know how things go. good luck.