Use a sharp knife to slice halfway through the chicken breasts to make a pocket.
Fill each chicken pocket with some cream cheese, mozzarella cheese, cheddar cheese, jalapeños.
Sprinkle some salt, pepper, garlic powder, onion powder inside each pocket.
Use the back of a spoon to press the filling down and squeeze it into the pocket.
Secure the opening with toothpicks to ensure the filling doesn't all ooze out during cooking.
Note: You can also make a cheese mixture first by mixing together cream cheese, mozzarella cheese, cheddar cheese, jalapeños, salt, pepper, garlic powder, onion powder and then, fill this cheese mixture into each pocket. That's what I did in the video below but you can do what I did above and this way, you won't need to dirty another bowl.
Spread taco seasoning on both sides of the chicken breasts.
Cover and cook for about 10-12 minutes or until chicken is fully cooked.
Heat oil over a non-stick pan over medium heat.
Place the chicken and pan fry one side until golden brown. Then flip it over and pan fry the other side.
Remove from pan and place on a plate and squeeze some lemon juice on top and garnish with sliced jalapeños and cilantro. Enjoy!