Deluxe Grilled Chicken Sandwiches

• 4 sesame seed buns
• 270 gr breast of chicken
• 55 gr monterey jack
• 1 gr garlic powder
• 1 gr basil (dried)
• 1 slice green pepper (sliced thin)
• 1 slice bell pepper (red sliced thin)
• 1 slice onion thinly (sliced)