Preheat the oven to 425°F (220°C). Pat the chicken leg quarters dry with paper towels and season both sides generously with salt and pepper.
In a large bowl, whisk together the olive oil, sweet paprika, minced garlic, dried Italian herbs, and chili powder (if using) to form a marinade.
Add the chicken to the bowl and toss thoroughly so each piece is evenly coated with the marinade.
Arrange the coated chicken pieces skin-side up on a baking sheet in a single layer, leaving space between pieces for even cooking.
Bake in the preheated oven for about 40 minutes, or until the internal temperature reaches 165°F (74°C) and the juices run clear.
Remove from the oven and garnish with lemon slices or wedges before serving.