Slice the bell peppers into thick strips and set aside. Thinly slice the onion and mince the garlic cloves.
Pat the chicken breasts dry, then season both sides generously with salt, pepper, smoked paprika, and cumin.
Heat a large skillet over medium-high heat until shimmering, then add 1 tablespoon of oil.
Place the chicken breasts in the hot pan and cook for about 4-5 minutes per side, until golden brown and cooked through. Once done, remove from pan and let rest for a few minutes before slicing thinly.
In the same skillet, add the remaining oil and toss in the sliced peppers and onions. Cook, stirring often, for about 8-10 minutes until they blister, soften, and develop some charred edges.
Add the minced garlic to the skillet and cook for about 30 seconds until fragrant, being careful not to burn it.
Return the sliced chicken to the skillet, squeeze the juice of the lime over everything, and toss gently to combine. Cook for another 2 minutes until heated through and smoky.
Warm the tortillas by placing them in a dry skillet for about 30 seconds per side or wrapping them in foil and heating in a 180°C (350°F) oven for 10 minutes.
Serve the sizzling chicken and peppers with warm tortillas, letting everyone build their own fajitas. Enjoy the smoky, juicy, and colorful flavors in each bite.