Preheat oven to 400 degrees.
Slice zucchini in half lengthwise then scoop out some of the center to make room for filling. Place scooped out zucchini in a bowl and set aside.
Rub avocado oil over zucchini boats and place on a baking sheet.
Bake for 20 minutes until fork tender.
Slice peppers and onion and place into bowl with scooped out zucchini.
Add in the chopped uncooked chicken.
Drizzle oil into bowl of chicken and veggies and toss together.
Whisk together the seasonings and toss into bowl.
Spread veggies and chicken onto another baking sheet.
Bake chicken and veggies for 25-30 minutes or until peppers are tender.
Scoop chicken fajita filling into zucchini boats and add top with shredded cheese if desired. You can return them to the oven for 5 minutes to melt cheese if you like.
Squirt some lime juice over filling and add optional toppings if desired.
Enjoy!