Why not prepare a big, interesting salad and marinade some chicken portions beforehand.
When it comes to cooking - bung the chicken in the oven, and at the same time, do some herby-roast potatoes (either new / small potatoes, or larger ones cut smaller than you would normally) - flavour with rosemary / thyme or even something spicy - fllaked chilli and smoked paprika - something to match the chicken, at least.
Apart from the odd basting - you don't even have to be in the kitchen - but outside enjoying a Pimms / chilled white wine / Scrumpy Jack cider with your friends.
And there you are, a sort-of 'salady roast', but lighter, and more suitable for this hot weather!