Step 1

In a large shallow bowl, combine lime juice, oil, garlic, cumin, salt, chili and cilantro; mix together. Add the chicken thighs and If time allows, let marinate for 30 minutes.

Step 2

Heat a large skillet or pan (12-inch | 30cm) on medium-high heat until smoking. Add a drizzle of olive oil to lightly coat the bottom of the pan. Sear the chicken on both sides until golden, charred and cooked right through (about 8 minutes per side, depending on the thickness of your fillets). Flip them a couple of times while cooking so they get a nice even char.Transfer chicken to a warm plate, loosely tent with foil and let rest.

Step 3

Add the peppers and onions to the skillet (drizzle with a little extra oil only if needed), and cook until the onion is soft and the peppers are slightly charred and cooked to your liking. Season with salt and pepper.

Step 4

Slice chicken into strips.Serve with warmed tortillas, chopped cilantro and sliced avocado (plus your desired fillings).