Now that I finally understand Professor Feser's position, I want to return to C.S. Lewis and ID. Let me begin by quoting from part of his chapter 12, "The Propriety of Miracles," in his book, Miracles; a Preliminary Study:
"If the Ultimate Fact is not an abstraction but the living God, opaque by the very fullness of His blinding actuality, then He might do things. He might work miracles. But would He? Many people of sincere piety feel that He would not. They think it unworthy of Him. It is petty and capricious tyrants who break their own laws: good and wise kings obey them. Only an incompetent workman will produce work which needs to be interfered with. And people who think in this way are not satisfied by the assurance given them in Chapter 8 that miracles do not, in fact, break the laws of Nature. That may be undeniable. But it will still be felt (and justly) that miracles interrupt the orderly march of events, the steady development of Nature according to her own inherent genius or character. That regular march seems to such critics as I have in mind more impressive than any miracle. Looking up (like Lucifer in Meredith's sonnet) at the night sky, they feel it almost impious to suppose that God should sometimes unsay what He has once said with such magnificence. This feeling springs from deep and noble sources in the mind and must always be treated with respect. Yet it is, I believe, founded on an error.
A supreme workman will never break by one note or one syllable or one stroke of the brush the living and inward law of the work he is producing. But he will break without scruple any number of those superficial regularities and orthodoxies which little, unimaginative critics mistake for its laws. The extent to which one can distinguish a just 'license' from a mere botch or failure of unity depends on the extent to which one has grasped the real and inward significance of the work as a whole. If we had grasped as a whole the innermost spirit of that 'work which God worketh from the beginning to the end', and of which Nature is only a part and perhaps a small part, we should be in a position to decide whether miraculous interruptions of Nature's history were mere improprieties unworthy of the Great Workman or expressions of the truest and deepest unity in His total work. In fact, or course, we are in no such position. The gap between God's mind and ours must, on any view, be incalculably greater than the gap between Shakespeare's mind and that of the most peddling critics of the old French school."
The whole chapter is worth reading, but I think I've quoted enough, for now, to show that Lewis would have no problem with the idea of God intervening in natural history in order to accomplish His ends, such as possibly bringing about the origin of life, or causing the necessary mutations needed to bring a new form of life into being. In other words, Lewis would have no theological or philosophical objections to Intelligent Design theory.