Cover meat with plastic wrap. Use a meat tenderizer to pound out the flank steak.
Rub flank steak with 1 tbsp of olive oil, cumin, cayenne pepper, salt, pepper and chili powder. Place into a Ziploc or vacuum sealed bag. Add in cilantro and lime juice. Place into sous vide at 130 degrees for 3 hours.
Add all the pico de gallo ingredients into a bowl and set aside.
Slice all bell peppers and place into a bowl, Add 1 tbsp of olive oil, salt and pepper to taste.
Pre heat oven to 350 degrees. Fire up your grill, place meat on grill for 2 minutes per side. Add oil to a cast iron or non stick skillet. Toss peppers in the pan and cook for 5 to 6 minutes for firm peppers or 10 minutes for soft peppers. Stir often. Place tortillas on a foil line largw baking sheet. Add equal amounts of cheesse to each tortilla. Cook for 5 minutes or until cheese has an even melt.
Assemble tacos with meat, peppers, and then pico last. Top with cilantro, salsa verde and lime juice, serve and enjoy!