Yes, there is mac & cheese or spaghetti, chicken nuggets or pizza, fries, some basic salads. There are usually some fairly plain (others just slightly spiced) potatoes, veggies, and sides. The carved roast meat is usually plain with sauces on the side, the chicken only has a rub on the skin but they might be OK with it if they don't eat the skin. There are cookies and sometimes brownies on the dessert trays if they don't like fancy desserts.
I love Boma and the exotic flavors, hubby is strictly meat & potatoes. Neither of us leave Boma hungry, he finds plenty to eat.
I've never seen burgers or hot dogs or that type of thing there, but they should find enough variety of things that appeal to them.