Pat 2 pounds of chicken thighs, drumsticks or breasts (or a combination) dry and season with 2 teaspoons kosher salt and 1/2 teaspoon black pepper.
Heat 3 tablespoons avocado oil in a Dutch oven over medium-high heat. Add chicken in a single layer and sear until golden brown on both sides, about 3-4 minutes per side (you may need to do this in batches). Remove chicken and set aside.
In the same pot, add 1 chopped white onion and 1 minced garlic clove to the fat leftover from the chicken. Season with salt and pepper. Cook over medium-high heat until softened and starting to get golden.
Reduce the heat to medium-low. Stir in 1/2 cup mole poblano paste, 3 cups chicken broth, and 2 tablespoons peanut butter. Stir until mole paste and peanut butter until they are completely incorporated.
Return chicken to the pot, cover, and simmer on low for 25-30 minutes, or until chicken is cooked through and sauce is thick. Taste and adjust seasoning.
Garnish with toasted sesame seeds and a sprinkle of pumpkin seeds for crunch. Serve warm with corn or flour tortillas, rice, and a wedge of lime.