Follow these easy steps to create your delicious Sheet Pan Chicken Pitas with Herby Ranch:

1. Preheat Oven: Begin by preheating your oven to 425°F (220°C).
2. Prepare Chicken: Cut the chicken breasts into bite-sized pieces and season with salt and pepper.
3. Slice Vegetables: Slice the bell peppers and red onion into thin strips.
4. Arrange on Sheet Pan: On a large sheet pan, spread the chicken pieces, bell peppers, and red onion evenly.
5. Drizzle Dressing: Drizzle half of the herby ranch dressing over the chicken and vegetables, tossing to coat evenly.
6. Bake: Place the sheet pan in the preheated oven and bake for 25-30 minutes, or until the chicken is cooked through and the vegetables are tender.
7. Warm Pitas: About five minutes before the chicken is done, place the pitas in the oven to warm them up.
8. Assemble Pitas: Once everything is cooked, remove the sheet pan from the oven. Fill each pita with the chicken and vegetable mixture.
9. Top with Dressing: Drizzle additional herby ranch dressing over the filled pitas for extra flavor.
10. Serve Immediately: Enjoy your delicious Sheet Pan Chicken Pitas while they are hot.