Preheat the oven to 400 degrees Fahrenheit and lightly grease a non-stick griddle pan or large oven-safe cast iron skillet.
In a large bowl, add your freshly cleaned + rinsed chicken along with olive oil + seasonings: salt, On Everything All-Purpose Blend, cumin, cinnamon, and smoked paprika, mixing everything together until chicken is fully coated.
Placing seasoned chicken breasts onto a clean cutting board, cut little 'slit-like' cuts atop each breast, about 1-inch or so apart. Repeat until all chicken breasts are cut with this design.
NOTE: Best when marinated for a while! To do so: Add coated chicken to a securely sealed ziplock bag and place in the refrigerator for 3 hours (minimum). Best if marinaded overnight. When ready to use, let chicken sit at room temperature for 15-20 minutes before cooking.
Line seasoned chicken breast (side by side) onto prepared griddle pan or skillet, leaving a bit of room in between each one. Add the sliced apples in between and around the chicken breasts.
Pour the chicken stock around everything and bake for 35-40 minutes or until golden brown and crispy on the outside and fully cooked through on the inside.
In a saucepan over medium-high heat, Add the honey, dijon mustard, sliced apples, and chicken stock, bringing everything to a boil. Reduce the heat to medium-low and let it cook through for 1-2 minutes, stirring everything together until sauce becomes smooth and thickened a bit. Remove from heat.
Generously spoon the homemade apple honey dijon glaze atop the chicken and any other veggies if using until completely covered.
Let everything bake for another 15 minutes or so or until the glaze 'bakes onto' the chicken and becomes nicely caramelized.
Remove from oven and let everything cool slightly. Spoon on remaining apple honey dijon glaze and serve with your favorite side of salad, pasta, basmati rice, brown rice, mashed potatoes, etc.
