Heat the olive oil in a large skillet over medium-high heat until shimmering.
Add the sliced onion and sauté until translucent, about 4–5 minutes, then add the minced garlic and cook 30–60 seconds until fragrant.
Pour in the canned fire-roasted tomatoes and warm the mixture for 2–3 minutes.
Stir in the chipotle paste, salt, pepper, cumin, oregano, and bay leaves until evenly combined.
Reduce heat to medium, add the chicken strips, and simmer, stirring occasionally, until the chicken is cooked through and the sauce thickens, about 8–10 minutes.
Remove and discard the bay leaves. Use two forks to shred the chicken in the skillet, then stir the shredded chicken into the sauce to combine.