This entire post is why I am finishing up a biology degree and am going to teach high school science. There are a LOT of people who need a better understanding of science.
"Scientific method asserts" -Scientific Method does not assert anything, it is a METHOD.
"Nothing living can come from something non-living" -this is a biggie, you don’t understand what life is, that’s ok because science education is lacking. Nonliving matter is chemistry, living matter is chemistry. If scientists assert anything it is the logical assertion that the self-replicating organic chemistry which we call life came from less complex non-self-replicating chemistry at some point in the distant past. When you restate the assertion made by 'scientific method'(?) it would be "no complex self-replicating organic chemistry can come from less complex non-self-replicating chemistry. That’s a silly thing to say. I hope you're starting to see how silly the straw man you built looks.
"Science is observable" -ok
"Science is reproducible" -this is classically true, but then you get into things like is economics or political science a science. We can't very well rerun and election or a market crash. Some things by their nature happen only once. But I digress.
"A living thing coming from non-living matter has NEVER been observed nor reproduced." -strictly speaking every time you eat cornflakes, your turning nonliving matter into living matter but i get your meaning. If a scientist were to observe 'life coming from nonlife'(again just it's chemistry) it would take the same millions of years it did the first time. If they were to figure out the mechanism and reproduce life in a beaker, which they may at some point, creationists would howl saying "but you created it!!!".
"Therefore, it takes FAITH in an unknown process to believe that that's exactly what happened in the beginning, with NO EVIDENCE!" -I have to say I'm confused by this. I would say the answer is staring you in the face, but in this case literally go look in the mirror, the answer IS STARING YOU IN THE FACE. You are the evidence that complex self-replicating chemistry came from less complex non-self-replicating chemistry. The earth of filled to the brim with the evidence that this happened. If god did it from clay or it happened on its own has yet to be proven either way, but it happened and we're all proof, no faith needed.
"So please tell me in scientific evidence , how life originated. A simple clear concise answer." -I can't wait to hear the answer to. Nobel prize winning stuff you can be sure. I hope it one of my future students!
"1) And yes, I have studied abiogenesis" -don’t be offended but I'm skeptical of this.
"2) Please do not attack theistic beliefs. Lets stick to the question." -ok