Add the sweet peppers, jalapeno, smoked paprika, and oregano and cook for another 4-5 minutes or until the chicken is no longer pink.
Wash out and wipe the skillet. Add the olive oil and cook the chicken for about 5 minutes.
Cook the mushrooms in a large skillet/pot not adding any fat, over medium heat, stirring occasionally, for about 7 minutes or until the mushrooms have started to brown and no longer too watery. Remove.