By Daliah Singer, Special to The Denver Post There’s a lot of talk these days about sustainable eating, slow food and social responsibility when it comes to what we put on our plates. A. Lot. Of. Talk. But then there are chefs like James Beard Award-winning Alex Seidel (Mercantile Dining & Provision, Fruition Restaurant) who actually cook that talk. With the opening of Chook Charcoal Chicken in Platt Park last December — with Adam Schlegel (co-founder of Snooze) and Randy Layman (one of the city’s top barmen) — Seidel committed to making more accessible and affordable food while maintaining the same level of purveyors and quality of ingredients as diners would find at his more high-end outlets.