In a bowl, mix shredded chicken with garlic powder, onion powder, paprika, salt, and pepper.
In a skillet, heat olive oil over medium heat. Sauté onion and peppers until tender, about 5 minutes.
Stir in the seasoned chicken and cook for 2-3 more minutes until warmed through.
Heat a clean skillet over medium heat. Butter one side of a tortilla and place it butter-side-down in the skillet.
Add a layer of cheddar and Monterey Jack cheese, followed by the chicken and pepper mixture. Top with more cheese, then another tortilla.
Cook until the bottom is golden and the cheese is melted, about 2-3 minutes. Flip and cook the other side.
Repeat with remaining ingredients. Slice into wedges and serve hot with your favorite dips.