In a frying pan over medium-high heat, add bacon. Cook until crispy and remove to a paper towel covered plate.
Add meatball ingredients to a bowl and thoroughly combine. Form into 12 1½-inch balls.
Spray muffin tin with cooking spray. Press half of each burger bun into each muffin whole. Spray again with cooking spray. Place one meatball into each cup. Place in oven for 15 minutes.
Remove tray from oven and place one quartered piece of cheese on each cup. Return to oven for 5 minutes more. Remove from oven and immediately top each with a piece of cooked bacon.
Drizzle each cup with ketchup and mustard. Secure a pickle chip on top with a long toothpick. Sprinkle with sesame seeds.