Begin by boiling a large pot of salted water for the spaghetti.
In a skillet, heat olive oil over medium heat.
Add chopped onion and sauté until translucent.
Stir in minced garlic and cook for another minute.
Season chicken drumsticks with salt, pepper, oregano, and basil.
Add chicken to the skillet and brown on all sides.
Pour in the canned diced tomatoes and bring to a simmer.
Once the water is boiling, add spaghetti and cook according to package instructions.
After the chicken is cooked through, shred the meat off the bones.
Combine the shredded chicken with the sauce and serve over spaghetti, garnished with parsley.