Season chicken with Italian seasoning, salt, and pepper.
Cook chicken in skillet with olive oil, 6–7 minutes per side.
Rest chicken for 5 minutes before slicing.
Prep vegetables: wash spinach, slice tomato & onion.
Warm tortillas in microwave (20 sec) or skillet (30 sec).
Spread 2 tablespoon pesto on each tortilla.
Layer spinach, chicken, mozzarella, tomato, and onion.
Add extras: cream cheese dots, sun-dried tomatoes.
Roll wrap tightly by folding sides inward, then rolling.
Slice diagonally, secure with toothpicks if needed, and serve.