Season the chicken with salt and black pepper and cook it in vegetable oil over medium-high heat for 4 to 6 minutes per side, until 165°F inside.
Rest the chicken for 5 minutes and slice it across the grain into thin strips.
Cook the bacon in a skillet over medium heat for 8 to 10 minutes until crisp, drain it on a rack and break each slice in half.
Warm the tortillas in a dry skillet for 15 seconds per side and place 1/4 cup cheddar across the center of each.
Divide the chicken, bacon, lettuce, tomato and ranch evenly over the cheese.
Fold in both sides of each tortilla, roll it tightly from the bottom and place seam-side down for 1 minute before cutting.