Preheat your oven to 400 degrees. In a baking dish, mix oats, wheat germ, sunflower seeds, and nuts. Bake for 10-15 minutes, stirring every few minutes for even toasting. At the same time, line a separate baking dish (no bigger than 11 x 13) with parchment paper, making sure to cover all sides. Remove the oat mixture from the oven (you won't need the oven again). In a saucepan, bring the honey, brown sugar, butter, salt, cinnamon, vanilla, and chili powder (if used) to a simmer, stirring constantly. Turn off the heat and immediately transfer ALL ingredients into a large bowl and combine until thoroughly coated. Transfer this mixture to your lined baking dish and press until firm, then cover with parchment paper. After at least three hours of cooling (though I prefer overnight in a refrigerator), flip onto a cutting board and remove all parchment paper. Cut into bars, and enjoy!