One tray, one hour, mostly unattended. The potatoes go in twenty minutes before the chicken, which is the only way both are done at once.

A traybake is the most forgiving way to feed four people well on a weeknight: one tin, fifteen minutes of work, and a portion with nearly 50g of protein.
Thighs are chosen over breasts deliberately. They have a little more fat, which keeps them juicy through a long roast, and more of the zinc and iron found in darker meat. Chicken is the site's most practical everyday protein, and a portion here covers most of the day's needs in one meal.
That protein is the point for both audiences. For men, muscle is one of the few things that reliably moves with training and diet together: does testosterone build muscle. For women after menopause, muscle loss accelerates as oestrogen falls, and strength training only builds muscle when protein supports it: strength training in midlife.
The fat is mostly the right kind. Extra-virgin olive oil and olives are central to the Mediterranean pattern with the strongest evidence for heart health, which matters after menopause, when heart disease risk starts to catch up with men's.
The honest note is the potatoes. They are why this is not tagged for blood sugar: new potatoes raise blood glucose faster than beans or lentils. Eating them with protein, fat and the skins on softens that, and the tzatziki helps, but if blood sugar is your priority, use half the potatoes and add a tin of chickpeas to the tray for the last 20 minutes.
For another one-pot chicken dinner, see the chicken, butter bean and kale pot.