Chicken Quesadillas {Chicken Fajita Style}

Ingredients

• 1 1/4 lbs boneless skinless chicken breasts, diced into 1/2-inch cubes
• 2 tsp chili powder
• 1 tsp ground cumin
• Salt and freshly ground black pepper
• 4 tsp olive oil, divided
• 2 cups chopped bell pepper (about 2, I use red and green)
• 2/3 cup chopped red onion
• 2 garlic cloves, minced
• 1 Tbsp fresh lime juice
• 6 (10-inch burrito size) flour tortillas
• 3 Tbsp butter, melted
• 6 oz. cheddar cheese, shredded (1 1/2 cups)
• 6 oz. monterrey jack cheese, shredded (1 1/2 cups)
• Guacamole, sour cream, pico de gallo or salsa, for serving (optional)*