In a medium mixing bowl, add chicken, 1/2 tablespoon oil, smoked paprika, salt and pepper. Stir with tongs well to coat each chicken piece in spices.
Preheat cast iron skillet on medium heat and add 1 tablespoon of oil. Using tongs, add half of the chicken pieces in a single layer, it's OK if they are tight. Fry for 3-4 minutes without touching, then flip on the other side and cook for another 3-4 minutes.
Transfer chicken onto a plate and cover. Repeat with remaining half of the chicken, leaving it in the skillet at the end. If pan is dry, add a bit more oil. You may have to cook for less time after flipping as skillet will be hotter.
Return previously cooked chicken bites to the skillet along with butter and garlic. Stir until butter is melted and turn off heat.
Garnish with parsley and serve immediately with rice or potatoes or/and salad.
Notes
Store: Refrigerate in an airtight container for up to 4 days.
Reheat: Reheat quickly in a skillet with a bit of oil. You can microwave them if short on time, but that generally dries out small chicken pieces. Air fryer at 380 F for 2-3 minutes works great though.
Freeze:Freeze for up to 3 months in an airtight container. Thaw in the fridge overnight.