Not at all, I used a pretty non specific term close to a cm, or slightly under half an inch works better than a thinner slice. You want the outside cooked and firm with a bit of bite, but internal should be soft and have the mouth feel of squish.
Chilli flakes in the honey works great and it can also be used on a salad, pomegranate seeds work well as a good contrast of colour and flavour. Sweet and salty combined.
Douse them in olive oil after slicing rather than spraying the grill or pan. But either works.
If you push it too much while it’s soft, it will tear. So just flip once works best. If you flip one and it’s sticking, wait for the others to firm a bit more. If you find they are burning, turn down the heat but keep the time the same for the other side.