Heat olive oil in a large skillet over medium-high heat until shimmering, about two minutes. Season chicken pieces generously with salt, pepper, and paprika before placing them in the hot skillet.
Cook chicken for 5-6 minutes per side until golden brown but not fully cooked through. Remove chicken to a clean plate and set aside while you build the flavor base.
Add chopped onion to the same skillet and sauté for 3-4 minutes until softened and fragrant. Stir in minced garlic and cook an additional minute, then sprinkle dried thyme and cumin over the vegetables.
Return the chicken pieces to your cozy chicken sweet potato skillet recipe, then add diced sweet potatoes and chicken broth. Bring everything to a gentle simmer, cover the skillet, and cook for 20-25 minutes until potatoes are tender and chicken reaches 165°F internally.
Stir in fresh spinach and butter until the greens wilt completely into the sauce, about two minutes. Taste and adjust seasonings, then garnish generously with fresh parsley before serving hot.