Toss the olive oil, chicken, seasoning, and freshly ground pepper in a bowl.
Heat one tablespoon olive oil in a large deep saucepan set over medium-high heat, add the chicken, and sear until deeply golden on both sides, about five minutes per side. The sugar in the seasoning will caramelize and darken the chicken. It adds significant flavor! Turn the heat off and transfer it to a plate.
While your chicken cooks, bring a large pot of salted water to a boil. Add the pasta and stir. Save half a cup of pasta water. Take your pasta out a couple of minutes before the package directions.
Add the onion to the same pan. Scrape the bottom with a wooden spoon to deglaze the pan. Cook for one minute until the onion is fragrant. Add the garlic and cook for one more minute.
Roughly mash the poblano peppers with a fork and add them to the pan. Pour any sauce from the peppers into the pan and cook for one minute.
Add the wine and cook on high for two minutes to let the alcohol evaporate.
Bring the sauce to a gentle simmer and cook for 5 minutes, until slightly thickened. Stir in the grated parmesan.
Put the pasta in the sauce, stir, and add a tablespoon or two of pasta water. Cook for 2 minutes.
Chop the chicken into bite-size pieces, add it to the pan, and stir. Add the parsley.
Remove from the heat and serve immediately with more parmesan and chili flakes.