Wash, dry, and slice the green and yellow bell peppers into strips.
Cut the onion in half and thinly slice.
In a wok or large sauté pan, heat olive oil on medium heat and sauté the onions until soft and translucent.
Add the sliced bell peppers and cook until soft. Season with salt and pepper and set aside.
Season Secreto Ibérico with salt and pepper on both sides. Heat a cast iron griddle or skillet over medium-high heat. Once the pan starts to smoke, carefully place the Secreto Ibérico in the pan.
Sear until golden and flip to sear on the other side. Once it’s cooked through, slice into strips.
To build the fajitas, place the peppers and onions in the tortilla, add the strips of Secreto Ibérico, cilantro, and a squeeze of lime.