In a medium sized bowl combine the yogourt, lemon juice, olive oil, garlic, paprika, oregano, salt and pepper. Mix well to combine and then add the chicken thighs, tossing to coat.
Cover your bowl and place in the refrigerator for at least 1 hour.
Preheat your outdoor grill to medium heat (350-400 degrees F)
Remove the chicken thighs from the marinade and place them on the grill, over the direct heat.
Depending how thick the chicken thighs are, it should take 4-5 minutes per side. The internal temperature of your chicken should reach 170 degrees F.
Let rest 5 minutes before serving, and enjoy!