Can I use chicken breasts instead of thighs?

Yes! However, chicken breasts are more finicky and easier to dry out than chicken thighs. Chicken breasts would still be good, they just need to be watched more closely since they are likely to dry out. If using chicken breasts, I would recommend increasing the oil to 2-3 tablespoon of the olive oil to help keep the chicken more moist and adjusting the baking time to 20-25 minutes.

What's the different between white meat and dark meat?

Both healthy, high protein sources that provide vitamins and minerals. Dark meat contains a little more fat than white meat but it's also higher in iron, zinc, riboflavin, thiamine, and vitamin B-12 than white meat. White meat has higher protein and lower fat but this can lead it being a little bit of a dryer texture. Again, both are great and can be used interchangeably in cooking just depending on the meal and your taste preferences!

What should I serve with this paprika chicken sheet pan dinner?

Some of my favorite veggies to serve with this sheet pain meal are green beans , roasted broccoli , roasted brussels sprouts or a simple side salad with a little chunk of crusty bread.