01 - Preheat oven to 400°F (200°C).
02 - Slice each chicken breast horizontally to create 6 even, small fillets.
03 - In a mixing bowl, whisk together the maple syrup, Dijon mustard, soy sauce, olive oil, smoked paprika, black pepper, and salt until well combined.
04 - Add the chicken fillets to the marinade, turning to coat evenly. Let rest for at least 10 minutes at room temperature.
05 - In a large skillet over medium heat, cook the bacon slices until golden and crispy, about 4-5 minutes per side. Transfer to paper towels to drain.
06 - Remove chicken from the marinade, reserving the remaining liquid. Grill or pan-sear the fillets for 3-4 minutes per side until fully cooked through. Set aside on a plate.
07 - Pour the reserved marinade into the same skillet. Simmer over medium heat for 2-3 minutes until slightly thickened. Brush the reduced glaze generously over each cooked chicken fillet.
08 - If using cheddar, place one slice on each glazed chicken fillet. Broil in the oven for about 1 minute until the cheese is melted and bubbly.
09 - Lightly brush the cut sides of each slider bun with butter. Toast in a skillet over medium heat until golden brown, about 1-2 minutes.
10 - Spread a thin layer of mayonnaise on the bottom half of each bun. Layer with arugula, a glazed chicken fillet, crispy bacon, sliced red onion, and the top bun. Serve immediately.