Prepare the Chicken: Brush chicken breasts with olive oil and season with garlic powder, paprika, salt, and pepper.
Grill: Cook over medium-high heat for 5–7 minutes per side, or until fully cooked (internal temperature of 165°F / 74°C).
Toast Buns: Lightly toast sandwich buns on the grill or in a skillet.
Assemble Sandwich: Layer lettuce, tomato, onion, cheese, and condiments on the buns. Slice the grilled chicken for easier stacking if desired.
Serve: Serve hot with chips, fries, or a simple salad.
