I'm a big fan of simple meals that let the true taste of the ingredients shine. If the pineapple is fresh, I'd save that for dessert - there's nothing better than sweet pineapple after dinner (it's even great for digestion!). Caramelize those onions in a bit of butter, cut the potatoes into chunks and roast them with a bit of olive oil, salt, pepper and whatever other herbs and spices you like. Marinate the chicken in lemon juice, olive oil, and crushed garlic for an hour or so, then pan sear them. Salt and pepper on everything. Serve with the caramelized onions and roasted potatoes, maybe a salad if you have it. Followed by fresh, sweet pineapple for dessert. Simple, healthy and delicious. YUM!