Has anyone, ever, argued that free will is unconstrained and limitless? I mean, if the universe itself is not infinite, why would anyone think that anything within it is infinite?
To me, free will is what you do within certain restraints, which include the laws of physics, your own genetic makeup and life experiences, and the actions of those around you.
In your nectarine example, there exist a whole host of possibilities. You might eat the nectarine. You might leave it for your wife. Your wife might then urge you to eat it. You might share it with your wife in a lot of different proportions. You might toss it out the back window to chickens in the yard. You might put it in a pocket, thinking you'll eat it while taking a walk, and then give it to a child along the way. Or you might end up throwing it at a car that splashed you with mud. You might decide to try your hand at juggling, pick up the nectarine and a couple of apples, and end up dropping all if the fruit, and then accidentally step on the nectarine while lunging for one of the apples.
I could probably go on all day, describing possibilities.