I made this in under 30 minutes. That even includes making the seasoning! It's easily adjustable to serve a few or a lot, just add extra peppers and more chicken. For an entree, you probably want to allow two peppers per adult. If you're serving it as a side, you'll probably want just one pepper per adult. It makes a beautiful dish that full of flavor and is super easy to prepare.
Preheat the oven broiler on high. Position an oven rack about 4 inches from the broiler. Line a large rimmed baking sheet with foil.
Place the poblanos on a cooking sheet and set under broiler.
Turn the peppers after 3-4 minutes, once they start to blister and turn black. Keep an eye on the peppers, this happens quickly. Peppers are done when all sides are blackened and blistered.
Remove peppers from heat and place in a plastic zip-top bag for 5 to 10 minutes.
Allow peppers to cool enough for you to handle.
Remove peppers from bag and remove blackened skin.
Cut each poblano pepper open, from stem to tip and remove seeds, set aside.
Chicken mixture
Season chicken breasts liberally with fijita seasoning on both sides. Heat a saute pan to med-high. Add vegetable oil. When oil is hot add chicken to skillet. Cook chicken breasts 3 to 4 minutes on the first side, turn and cook another 2 to 3 minutes until cooked through. Cook time will vary depending on the size and thickness. I pound them flat to help speed up this process.
Remove from pan and chop chicken into chunks.
Return chicken to pan along with diced tomatoes, corn and black beans.
Heat through.
Place the peppers on a oven safe serving tray.
Stuff each pepper with the chicken mixture.
Add evaporated milk, American cheese, and Monterrey Jack cheese to a microwave-safe bowl and microwave for 30-40 seconds at a time until melted. Drizzle the melted cheese over the chicken before placing in the oven. (There will be leftovers for extras or dipping.)
Sprinkle queso fresco over the stuffed peppers. In a 400 degree oven, heat peppers in oven until peppers are heated through and queso fresco is warm about 15 minutes.