Pre-heat the oven to 350F.
In a small mixing bowl, combine the chili powder, cumin, garlic powder and a pinch of salt and pepper. Season both sides of the turkey cutlets with the spice mixture.
Place a large skillet over medium-high heat with the EVOO, two turns of the pan. Add the cutlets to the pan, making sure not to crowd the pan (cook in batches if necessary), and cook, turning once, until golden brown and cooked through, about 2-4 minutes per side. Remove the cutlets from the pan, let cool slightly and cut into strips or cubes.
Add the ranch dressing, pimentos, chili powder, cumin, lime and cilantro to a food processor and pulse to combine until the pimentos are pureed. Empty the flavored ranch into a bowl and stir in the scallions. Season with pepper, to taste.
To serve, arrange rows of the cooked turkey, shredded cheese, black beans, corn, red onion, red bell pepper and cilantro (if using) on top of either four individual portions of romaine dressed in the Yum-o! Southwest Ranch dressing, or on one large serving platter. Pass more dressing around at the table to drizzle on top.