Preheat oven to 425 degrees.
Heat 1 tbsp olive or avocado oil over medium heat. Saute garlic, onion, and jalapeno until fragrant, about 3-4 minutes. Stir in paprika, cumin, oregano, and cilantro for about a minute. Swirl in chipotle pepper and tomato sauce until incorporated, about another minute. Shred jackfruit pieces with your fingers until they resemble pulled pork - no fear if it isn't perfect, they'll continue to soften and shred themselves as they cook! Add to the pan. Pour in tomato sauce, 1/2 cup water, and a pinch of salt and pepper. Bring to a boil, then simmer at least 10 minutes but up to 30 minutes, stirring occasionally.
While the jackfruit cooks, toast the tortillas. Rub each side of the tortillas with olive oil and lay flat, with no overlap, on a baking sheet. Bake 6-8 minutes per side until crisp.
Divide jackfruit mixture among four tortillas. Sprinkle each with about 2 tbsp cheese, then top with a second tortilla. Spoon the remaining jackfruit tinga among the top four tortillas and finish with the remaining cheese. Bake about 10 minutes until cheese melts and is bubbly.
Toss together mango, red onion, cilantro, tequila, lime juice, and a pinch of salt. Sprinkle overtop the finished tostadawiches.