Option 1 (oven): mix the first seven ingredients with just enough coconut or avocado oil and salt to coat. Spread on baking sheet and roast on about 400°F stirring occasionally until roasted, or place under broiler for a minute or two between stirs.
Option 2 (stove top): place the first seven ingredients, with just enough oil to coat, in a non-stick skillet on medium-high heat. Let sit for 3-5 minutes until they begin to color, stir, repeat until desired char.
I've made this salsa two different ways and they both turn out great. I prefer to char in a skillet as it is quicker, but do what is easiest for you!