Start by patting your chicken tenderloins dry, which helps them sear properly. Mix paprika, Italian seasoning, onion powder, salt, and pepper in a small bowl. Coat the chicken evenly in this seasoning so every bite is packed with flavor.
Heat the olive oil and half of the butter in a skillet over medium-high heat. Add the chicken in a single layer and let it cook without moving it for 3–4 minutes. Flip and cook another 3–4 minutes until golden. This step gives the tenders their crisp edges and juicy interior.
Remove the cooked chicken and set aside. Lower the heat to medium, then melt the remaining butter in the same skillet. Add the minced garlic and sauté for about a minute. Stir gently to avoid burning, allowing the garlic to turn fragrant and lightly golden.
Return the chicken tenders to the skillet and toss them in the garlic butter sauce. Let them simmer for a minute so all the flavors soak in. Finish with freshly chopped parsley for freshness and color, and serve warm.