01 - Heat a grill pan or skillet over medium-high heat until properly hot.
02 - Brush chicken breasts with olive oil and coat evenly with salt, black pepper, and garlic powder on all sides.
03 - Place seasoned chicken on hot grill pan. Cook for 6 to 7 minutes per side until internal temperature reaches 165°F. Remove from heat and let rest for 5 minutes before slicing into thin strips.
04 - Combine chopped romaine lettuce with Caesar dressing in a large mixing bowl. Toss until leaves are evenly coated. Add cherry tomatoes and red onion if desired.
05 - Lay tortillas flat on a clean work surface. Distribute dressed lettuce mixture evenly among all four tortillas. Arrange sliced chicken over lettuce and sprinkle with Parmesan cheese.
06 - Add additional black pepper if desired. Fold both sides of each tortilla inward, then roll tightly from bottom to top to form a secure wrap.
07 - Cut each wrap diagonally in half. Serve immediately or wrap tightly in aluminum foil for a portable meal option.