01 - In a large mixing bowl, combine chicken strips with olive oil, minced garlic, paprika, dried oregano, salt, and ground black pepper. Mix thoroughly to ensure all pieces are evenly coated.
02 - Preheat a large nonstick skillet over medium-high heat. Add the marinated chicken and cook for 5 to 6 minutes, stirring occasionally, until the chicken is cooked through and edges are golden. Set aside to rest.
03 - Arrange the tortillas on a clean surface. Evenly distribute the cooked chicken, mozzarella and cheddar cheeses, red onion slices, diced tomato, and spinach leaves along the center of each tortilla.
04 - Fold the sides of each tortilla inward, then roll tightly to enclose the filling and form a secure wrap.
05 - Melt unsalted butter in a large skillet over medium heat. Place the wraps seam-side down and cook for 2 to 3 minutes per side, pressing gently, until the tortillas are golden brown and the cheese has melted.
06 - Transfer the grilled wraps to a cutting board. Slice in half if desired and serve immediately while warm.