Prep your chicken by removing any skin and cutting them into 1-inch cubed pieces.
Place the chicken into a food storage container, sprinkle with salt, and mix to make sure it’s coated thoroughly.
In a separate mixing bowl, combine the Dijon mustard, soy sauce, agave, five spice, ginger powder, and garlic powder. Mix until incorporated.
Pour the marinade over the chicken and coat thoroughly. Cover with the lid and place it in the fridge. Marinade for 4 hours, mixing the chicken at the halfway point for even absorption. Then remove chicken from fridge 30 minutes before cooking to let it come to room temperature on the counter.
In a saute pan over medium heat, add one tablespoon of oil.
Cook the chicken in batches. Add the chicken to the pan in an even layer without crowding. Let it sear for about 1-2 minutes or until it lifts itself from the pan. Add more oil if necessary. Turn over and cook for another 1-2 minutes.
Chicken is done when it reaches 165 °F internally with a thermometer.
Transfer to a plate and add optional toppings. Serve.