Start by preheating your oven to 200°C (375°F).
Rinse and dry the chicken wings with a kitchen (or paper) towel, then season with salt and ground black pepper.
Using a medium or large skillet, heat oil over medium-high heat.
Once the oil is ready, add the seasoned chicken carefully.
Brown the chicken on both sides, then place them on a plate, and set aside.
Remove some of the oil left in the pan and leave just about 2 tablespoons of oil --- enough to saute the garlic and onion.
Adjust the heat to medium and add the garlic and onion.
Cook until the onions softened.
Add the chopped dates, sweet paprika, salt, pepper, and thyme.
Mix and cook for about 3 to 4 minutes.
Turn the heat back to medium-high, then put the browned chicken wings back into the pan.
Pour sherry into the chicken.
Mix to combine, leave uncovered, and let the sherry evaporate.
The sauce will be noticeably thicker once most of the sherry has evaporated.
Mix to ensure that the chicken wings are coated with the thickened sauce.
Taste and adjust the seasoning, if needed.
Place the skillet in the oven for 20 to 25 minutes.
After the first 10 minutes, take the skillet out and mix the chicken to turn the other side up.
Place the skillet back in the oven and finish cooking.
Serve your Spanish sweet and sticky chicken wings with some chopped parsley on top, if preferred.