Do you want lunch suggestions or something akin to roast dinner?
Loads of options for vegetable / lentil soups and fresh bread.
Vegetable lasagne or lentil & ricotta moussaka ala Delia (linky), with crisp salad, olives and warmed bread.
Or google mushroom wellingtons or moroccan style chickpea (or sweet potato works well, just buy harissa paste rather than separate spices), with green veg and roast potatoes.
Or bbq-style, plenty of different salad items, roast some peppers, onions, mushrooms and tomatoes in a hand full of whatever herbs you have to hand, and grilled halloumi (or fried saganaki).