Line a 6-cup baking dish with two pieces of parchment paper, so that it overhangs the dish on both sides (this will make the bars easier to remove later).
For more flavor, toast the oats and nuts before making the bars. If you don’t have an oven, skip this step. Preheat the oven to 350 degrees F (175 degrees C). Place oats on a rimmed baking sheet and toast for about 15 minutes. Place the nuts, coconut, and seeds on a separate baking sheet and toast until fragrant, about 7 minutes.
Combine the peanut butter, honey, and oil in a small saucepan over medium heat. Stir and heat until an even consistency.
Stir together the oats, nuts, chocolate chips, salt, and peanut butter mixture until evenly mixed. Press firmly into the prepared pan. Let cool completely, then flip out onto a cutting board and cut into bars.
Wrap the bars tightly in waxed or parchment paper or plastic wrap and eat within five days.